Imago Metrics:Glock Lights W/ Lasers

Tactical weapon-mounted illumination devices

Introduction to : Tactical weapon-mounted illumination devices

The Tactical weapon-mounted illumination devices sub-section of Personal Illumination Options is a collection of illumination products that span the horizontal range of products that do not fit the category of traditional hand holdable flashlights. The products on this page provide task and goal based solutions for a targeted end-user base of customers. As such, they represent a narrow scope of products that share a common interface with specific weapons mounts such as the Picatinny, H & K, Glock or other rail and weapon interfaces.

Glock Rail - Pistol Mounted - Combination Lights With Lasers

Glock GTL21

M6 Tactical Illuminator

M6X Tactical Illuminator

Laser Devices
Las/Tac 2

Laser Devices
Blast-2

Composite#1

Composite#2

Glock Light
Accessories

Glock Inc- GTL21 Laser/Tactical Light - Overall Score> 4 Stars (Out of 5 Maximum)

Dimensions & Weight Case Material Case Features Case Access Type Switch Type Reflector Type Lens Type Bulb Type Circuit Beam Type Beam Characteristics Overall Output Nominal Color Battery / Power Type Battery Life (advertised) Environmental Protection Mounting Laser/Bore Divergence Special Items of Note Warranty Retail Availability & Cost	....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......	L=3.1"/77mm,W=1.2"/31mm,H=2"/50mm Weight W/Batteries=3.2 oz/84gm Composite polymer Removable bezel / Battery Compartment Threaded bezel / Spring loaded battery compartment cover Symmetrical ambidextrous lever + 4-position mode dial High polish- integrated in bezel Polycarbonate - integrated in bezel High-Pressure 4.8V Xenon 2 pin Direct Drive (Un-regulated) Combination Spot/flood Bright hotspot /Medium-wide corona Lumens ? (Advertised) Color temperature (estimated) 3,400ºK 3V Cell Type 2 x CR123A- lithiums - included 70 Minutes (Advertised) O-ring seals "water resistant" Glock/NATO/Weaver Rail 2.54" Bulb Glock Xenon (A common 2 pin 4.8V High Pressure Xenon bulb) 1 Year warranty $ 250.00 MSRP as evaluated http://www.Glockmeister.com
General Description		The Glock Tactical Light GTL21 is a Glock Inc. manufactured universal accessory for any pistol that has the Glock rail mount . Its design conforms to the pistol's contours at the rail as well as at the trigger-guard. The fabrication material seems to be the same as that from which the pistols are made (unconfirmed) - a black composite polymer. The Glock GTL21 allows the operator of a Glock pistol to activate the light and laser aiming functions and also operate the pistol without changing hand positions. The GTL21 allows for control of Off, momentary On or constant On states from one switch mechanism and with the use of either the left or right hand. In addition, a second mode selection lever, allows for one of the following three modes to be selected: -Off -Laser Only -Light Only -Light Simlutaneous With Laser The laser's exit pupil is 2.54" divergent from the barrel's bore center
Form Factor & Build		Since the GTL21 is designed to perfectly integrate with the host pistol; it effectively makes use of the available space beneath the accessory rail. Its width is narrow- being only slightly wider than the pistol itself. Because it uses a 'stacked' pair of batteries, it hangs down slightly below the bottom of the trigger guard. Thanks to a shallow reflector, it manages to only slightly protrude forward of the typical Glock muzzle. The build quality and finish are equal to that of the Glock pistols. There are no rough edges and threading and fit are excellent and the color matches that of the pistol.
Mount		The GTL21 mounts directly, and without any adaptation or adjustment, to any Glock designed accessory rail. Attachment is very smooth and quick. Seating is confirmed with an audible 'click'. There's no rattle or 'play' in the fit and there are no significant gaps between the light and the pistol. Dismounting is effected by a disengagement of the locking bar with the first finger and thumb of one hand and then a sliding of the light along the rail and off the front of the pistol.
Switches		The GTL21 uses an ambidextrous and symmetrical lever that allows for control of the light from either the left or right side. Pressing lightly downwards on the switch, momentarily activates the light. Releasing the switch lever(s) conversely returns the light to it's Off state. Constant On activation is effected through firmer pressure on the switch lever(s). De-activation from Constant On, is effected by a sharp upward 'flicking' of the switch till it disengages and is returned to full Off. A slight binding issue with the rocker switch - noted in our evaluation of the TL-1 has been all but eliminated and solved in the GTL21. In addition to this 'state' switch, a second switch positioned at the bottom most edge of the unit, allows for mode selection between laser and light functions.
Battery		The battery compartment is opened (while the light is dismounted) by sliding a 'pencil-case' style lid in the direction of an arrow till the edge of the lid is free of the compartment's edge. Batteries must then be vigorously shaken out from the compartment. Several tries to accomplish this task un-aided, proved futile. Ultimately, a pointed object such as a door key must be used as a lever in order to dislodge the top-most battery, since it becomes trapped under the compartment's front lip.The lower-deck battery may also require a similar extraction procedure, though a firm shake-down should force it out. Amazingly, the operator must refer to the manual to determine the orientation of the lower-most battery for correct polarity. There's no pictogram on the light itself to aid in this task. Once batteries have been replaced, the lid is put back on and re-latched to the edge of the compartment. This process requires diligence - since on several tries, we failed to securely engage the lid to the casing. Part of the trouble comes from upward pressure from the 'O' ring seal that surrounds the compartment opening and which prevents water from entering the compartment. Significant downward pressure in concert with a re-latching motion is required to properly close the lid. To make matters worse, there’s no audible or tactile confirmation signaling that proper closure has occurred. As such, we deemed this design to be a troublesome feature of the Glock GTL21 and a problem that could result in a poor seal of the compartment lid and therefore, a possible compromise of waterproofness. Good design heuristics dictate that users should be confident that an intended action has resulted in an intended goal achieved. The compartment lid on the GTL21 falls short of this practice.
Bulb		The bi-pin bulb is easily replaced by first un-screwing the bezel from the casing. A notched ring on the bezel's front edge affords ample grip surface. Once the bezel is off, the bulb is simply pulled out of its pinhole mounting and replaced. We discovered that this design, while making replacements easy, could promote accidental disengagement of the bulb from its mount. Vigilant checking of bulb seating, every 100 rounds or so, are therefore recommended.
Human Factors & Usability		The Glock GTL21 is contoured to visually and ergonomically blend in with the pistol. Attachment is intuitive and easy - with both a tactile and audible 'click' signaling that proper seating has occurred. The activation switch binds only very slightly - a vast improvement over the preceding model, the TL1. As with the TL1,the fact that the entire light hangs below the bottom of the trigger guard could be a usability hindrance to operators with large or very large hands. The GTL21 consumes some of the space that would be used by a shooter’s support hand. This makes it less useful for large handed individuals. This is somewhat compensated for by the fact that the GTL-21, like it's predecessor, has a lateral girth that is only very slightly wider than that of the gun that hosts it. This may be of great advantage to those that depend on a streamlined continuity between the weapon and the mounted light to minimize holster binding or to minimize 'printing' in concealed carry situations. Adjusting the laser's aimpoint is accomplished with the use of a small screw-driver that is included in the package. As with most laser aiming devices, the 'X' axis or windage and the 'Y' axis or elevation, are fine tuned through adjustment screws - clearly visible and accessible from tbe outside unit casing. Mounting the light on a Glock and then immobilizing the weapon while sighting it on a target at a fixed distance away is the only way to accurately coincide the regular sights with the laser. Deviation is resolved via the two laser aim adjustment screws. As such there really is only one 'On Target' distance, deviations from which will result in a plus or minus elevation deviation in the laser's aim. This phenomenon is more dramaic the further away from bore center that an aiming technology is located.Gettng a pistols iron or other on-board sights properly adjusted is the first step to sighting the laser module.
Beam Characteristics & Light Quality		The GTL21 produces a beam that is a combination of a wide corona pierced by a slightly 'batwing' hotspot at its center. As such, it's a serviceable illumination profile with undulations or artifacts previously reported- having been smoothed out through a better optimized reflector formula.
General Task performance optimization		Based on trials that included 'room clearing'- we concluded that the Glock GTL21 was a satisfactory light for the purpose for which it was probably intended- that is, illuminating the target for positive identification in a dim or dark room. In a totally dark space it provides ample illumination to allow the shooter to properly survey the scene as well as to aim the pistol. Because weapons mounted lights are often viewed as non-lethal compliance tools, a beam bright enough to temporarily blind the subject is preferred. The GTL21 is marginal in this regard.
Laser task performance optimization		The integrated laser aiming module, provides ample illumination for use with Infra-red night vision equipment as well as being an aim assist to supplement 'iron' or other aiming systems onboard. Being 2.54cm off bore axis, the laser pointer's deviation from the target was more accutely noticable at distances ± 10 meters from the target point. This could translate into a substantial margin of aim error at great distances but less so at distances of between 20 meters and one meter. In many cases, the laser is used more as a non-lethal compliance tool than as a bon fide aim assist. As with most red-diode lasers, the laser dot generated by the GTL21 is less noticable as the ambient level of illumination increases and may well be useless in bright daylight. The switch is simple to learn and to commit to muscle memory. It's nothing more than a rotary dial with four positions. All Off, All On, Laser Only and Light Only. The detent is Off at the center or '6-Oclock' postion on a watch dial. Laser aimpoint adjustment is performed with the assistance of a tiny slot screw-driver that is included for this task. Windage & Elevation are adjusted with the weapon pre-sighted on target and on a bench. Due to the ocular parallax phenomenon, there really is only one accurate target distance and the laser should be re-set for differing anticipated target distances on an exponential scale. That is- as the distance between the subject/target and the laser exit pupil halves, the divergence between bore aim and laser aim will increase by an exponential factor. The farther away that the laser exit pupil is from the bore axis , the greater the divergence.
Quality of match to host product		The Glock GTL21 almost perfectly matches the Glock pistol. Its greater height measure and resultantly lower 'floor'- could cause some operators to find fault with its ergonomics. Individuals with larger hands or users that anticipate the use of thick gloves should test this light to ensure that it allows for a secure hold on the weapon. Some slight complaints with the previous model light have been significantly improved and the addition of an integrated laser makes the GTL21, the value leader in such products for the Glock.
Accommodation for holster carried pistols		The Glock GTL21 was mounted on a stock Glock G-31 and an Uncle Mike's brand tactical holster was fitted to the pair. Due to the lower 'drop' of the GTL21, the required carry holster is wider than the same weapon carrying any of the other available lights in our evaluation samples. The G31/GTL21 combination was fast and smooth to draw and re-holster, probably due to the light's minimal side protrusion. Mean draw time (Thumb-break open) was 1.1 seconds (compared with 1.0 seconds for the weapon alone). The form factor of this product as well as holster draw performance is identical to that of the TL1 model.
Pros		Minimal protrusion beyond muzzle \| Form-factor requires a flatter holster \| Relatively cheap and easy to replace bulb \| Smooth attachment \| Minimal lateral protrusion \| Glock quality manufacturing \| Fast draw from dedicated holster\| Least expensive Glock light.
Cons		May interfere with some shooters' hold positions \| Bulb could become unseated \| Form-factor requires a wider holster \| Slow and awkward battery replacement \| Easily losable battery compartment cover \| No battery orientation aids \| Minimal (English only) Instructions
Summary Conclusions		The Glock GTL21 is significant upgrade to it's predecessor the TL1. At its price-point, it represents the lowest cost option currently on the market for anyone wanting to extend the nocturnal usefulness of his or her Glock pistols with the added feature of a laser aiming module. The innovative vertically stacked battery chamber makes the GTL21 flatter laterally . Most users with medium to small hands will not find the bulkiness of the GTL21 a problem, but those with large hands or that are contemplating the use of heavy gloves, may want to test the light/pistol combination before making a firm commitment to purchase it.
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Insight Technology Inc. - M6 Tactical Illuminator
Overall Score>4.75 Stars (Out of 5 Maximum)

Dimensions & Weight Case Material Case Features Case Access Type Switch Type Reflector Type Lens Type Bulb Type Circuit Beam Type Beam Characteristics Overall Output Nominal Color Battery / Power Type Battery Life (advertised) Environmental Protection Mounting Laser/Bore Divergence Special Items of Note Warranty Retail Availability & Cost	....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......	L=3.4"/85mm,W=1.6"/39mm,H=1.9"/39mm Weight W/Batteries=3.7oz/91 gm Composite polymer Removable bezel / Battery Compartment Threaded bezel / Composite backplate & latch Asymmetrical ambidextrous lever High polish- integrated in bezel Polycarbonate - integrated in bezel Proprietary mount - tungsten halogen, xenon filled Direct Drive (Un-regulated) Combination Spot/flood Bright hotspot /Wide corona 90 Lumens (Advertised) Color temperature (estimated) 3,800ºK 3V Cell Type, 2 x CR123A- lithiums - included 60 Minutes (Advertised) O-ring seal in bezel only. Glock/NATO/Weaver Rail 2.125" Proprietary mount bulb / various accessories available 1 Year warranty $329.00 MSRP ($269.00 street) as evaluated http://insightlights.com
General Description		The Insight Technology Inc. M6 Tactical Illuminator evolved from one of the first dedicated tactical lights to be offered for the Glock rail pistols the IT M3 Tactical Illuminator. Though originally intended for the Glock pistol, it has also found favor with operators of several other types of small firearms - due in part to it's compact form-factor, bright output and and light weight. It's a viable accessory light for any firearm through the use of interface adapters, mounts and remote switches. Its design conforms to the pistol's contours at the rail as well as at the trigger-guard. The fabrication material seems to be the same as that from which the pistols are made (unconfirmed) - a black composite polymer. The ITI M6 Tactical Illuminator allows the operator of a Glock pistol to activate the light and laser with one hand and also operate the pistol without changing hand positions. The M6 allows for asymmetrical control of Off, momentary On or Constant On states from one ambidextrous switch lever and with the use of either the left or right hand. It is nearly identical in form factor and functionality to its non-laser enabled counterpart the M3. The laser's exit pupil is 2.125" divergent from the barrel's bore center
Form Factor & Build		Since the ITI M6 is designed to perfectly integrate with the host pistol; it effectively makes use of the available space beneath the accessory rail. Due to the two-astride arrangement of batteries, its overall width is greater than that of the host pistol . This arrangement gives it a streamlined look-making it hang down to just line up with the bottom of the trigger guard. It slightly protrudes forward of the typical Glock muzzle- but in no manner interferes with aim or projectile discharge. The build quality and finish are equal to that of the Glock pistols. There are no rough edges and threading and fit are excellent and the color matches that of the pistol.Due to the added space devoted to the laser component, the M6, like the M6X, hangs down more than thier non-laser enabled cousins.
Mount		The ITI M6 mounts directly, and without any adaptation or adjustment, to any Glock designed accessory rail that is conforming to the Glock/NATO/Weaver Rail metrics. Attachment is very smooth and quick. Seating is confirmed with an audible 'click'. There's no rattle or 'play' in the fit and there are no significant gaps between the light and the pistol. Dismounting is effected by a disengagement of the rail lock bar with the first finger and thumb of one hand and then a sliding of the light along the rail and off the front of the pistol.
Switches		The ITI M6 uses an ambidextrous and asymmetrical lever that allows for control of the light from either the left or right side. Pressing lightly downwards on the 'see-saw'switch levers on either side, momentarily activates the light. Releasing the switch lever(s) conversely returns the light to the Off state. Constant On activation with the left-side thumb is effected through firmer upward pressure on the switch lever. Left side thumb de-activation from Constant On, is effected by a sharp downward 'flicking' of the switch till it disengages and is returned to full Off-line, Constant On activation with the Right-side trigger finger is effected through firmer downward pressure on the right side switch lever. Right side trigger finger de-activation from Constant On, is effected by a sharp upward 'flicking' of the switch till it disengages and is returned to full Off. The result of this asymmetrical procedural model is that left handed and right handed users must learn opposite procedures to implement constant On / Off states. Numerous accessory backplates afford the user a range of activation options to suite specific end-user needs.The laser component is controlled through the separate selector dial switch that is located directly beneath the 'see-saw' lever switch that controls the white light. In addition to this 'state' switch, the second switch positioned at the bottom most edge of the unit, allows for mode selection between laser and light functions as well as full Off.
Battery		The battery compartment is opened (while the light is dismounted) by disengaging the compartment lid latch till the edge of the lid is free of the compartment's edge. Batteries will then freely come out for replacement. While the de-latching process requires nimble dexterity, it's easy to learn without too much practice.Tiny and faintly embossed pictograms are printed outside on the left and right sides of the unit to aid in battery polarity orientation. Once batteries have been replaced, the lid is put back on and re-latched to the top edge of the compartment. This process requires some diligence - since the bottom of the lid must properly engage a slot in the bottom of the compartment. Though seemingly tricky, the opening and closing of this compartment was not too difficult- though we deemed it a solution in need of improvement. The only real shortcoming of the M6 battery compartment is its lack of a waterproofing seal. Though not a concern for a majority of users, this excludes the M6 from consideration as a light in high water exposure risk environments.
Bulb		The proprietary mount M6 bulb assembly is easily replaced by first un-screwing the bezel from the casing.Knurling on the bezel affords ample grip surface. Once the bezel is off, the bulb assembly is simply pulled out of its dedicated inset and a replacement put in its place. There is no way that the bulb's contacts could fail to make a connection with the body's contacts and the hefty spring surrounding the bulb is there to absorb some of the shock that occurs during weapon firing and recoil. After nearly 100 test fired rounds, the bulb of the M6 remained operational and intact.
Human Factors & Usability		The ITI M6 is contoured to visually and ergonomically blend in with the pistol. Attachment is intuitive and easy - with both a tactile and audible 'click' signaling that proper seating has occurred. The activation switch goes into the momentary On position smoothly and constant On or Off require a firm commitment that is rewarded with a distinct and audible "click". This action ensures that the operator need not focus too much attention or energy into the process of activating the light- especially since they are using the same hand to control grip and firing of the weapon. The added finger pressure required for Constant On ensures that inadvertent activation of Constant On is mitigated against. It is unfortunate that the operational process is asymmetrical since that requires significant cognitive effort for a (strong) right handed user to properly operate the light in the event that they would wish to use their weak hand instead. Another problem is that left handed users must be instructed differently. One item of concern is that the instruction manual discusses activation with the trigger finger (presumably) in a right handed only usage scenario. This recommendation is deemed to increase the likelihood of accidental weapon discharge since it involves the trigger finger in 'flicking' motions close to the trigger. A much safer policy would be to use the weak-hand thumb be the sole operator of the light- effectively bifurcating weapons trigger control and light control into two separate hands and fingers respectively. The potential and hypothetical hazards of the switch design aside, it's possible to train operators of the M6 to use the light differently if they are using a strong hand only or a two-handed hold on their weapon. Clearly if one then takes into account the possibility of a one or two handed weak-hand hold, then the operational procedures double to four rather than just two ways to activate and de-activate the light.
Beam Characteristics & Light Quality		The M6 produces a beam that is a combination of a wide corona pierced by a smooth and slightly oval hotspot at its center. As such, it's a versatile illumination profile (Context Inclusive Illumination Window or CIIW) that combines a far throwing hotspot with a wider disc of light that adds context and aids in navigation, especially in dark interior spaces. The M6 generates a slightly amber color balance of white light that effectively compensates for blue light scatter caused by airborne particles such as smoke,dust or water vapor. Unlike the distinctly amber/orange hue of lower power flashlights, the M6's light is perceived as being much whiter to the eye. This color temperature also promotes color differentiation within the subject and scene. As might be expected, color temperature falls as the output diminishes so that it may be around 3,200ºK once the light has reached 50% of maximum intensity.
Task performance optimization		Based on trials that included 'room clearing'- we concluded that the Insight Technology M6 is well suited to the purpose for which it was probably intended- that is, illuminating the target for positive identification in a dim or dark room. In a totally dark interior space it provides a great deal of illumination to allow the shooter to properly survey the scene as well as to aim the pistol. Even in outdoor scenarios it was bright enough to outshine some of the most popular handheld flashlights used by law enforcement personnel. Because weapons mounted lights are often used as non-lethal compliance tools, a beam bright enough to temporarily blind the subject is preferred. The M6 is excellent in this regard even up to a distance of around 50'.
Laser task performance optimization		The integrated laser aiming module, provides ample illumination for use with Infra-red night vision equipment as well as being an aim assist to supplement 'iron' or other aiming systems onboard. Being 2.125" off bore axis, the laser pointer's deviation from the target was more accutely noticable at distances ± 9 meters from the target point. This could translate into a substantial margin of aim error at great distances but less so at distances of between 20 meters and one meter. In many cases, the laser is used more as a non-lethal compliance tool than as a bon fide aim assist. As with most red-diode lasers, the laser dot generated by the M6 is less noticable as the ambient level of illumination increases and may well be useless in bright daylight. The switch is simple to learn and to commit to muscle memory. It's nothing more than a rotary dial with four positions. All Off, All On, Laser Only and Light Only. Laser aimpoint adjustment is performed with the assistance of a tiny slot screw-driver that is included for this task. Windage & Elevation are adjusted with the weapon pre-sighted on target and on a bench. Due to the ocular parallax phenomenon, there really is only one accurate target distance and the laser should be re-set for differing anticipated target distances on an exponential scale. That is- as the distance between the subject/target and the laser exit pupil halves, the divergence between bore aim and laser aim will increase by an exponential factor. The farther away that the laser exit pupil is from the bore axis , the greater the divergence.
Quality of match to host product Accommodation for holster carried pistols		The M6 almost perfectly matches the Glock pistol. Its thoughtful attention to ergonomics is reflected in the fact that it barely interferes with weapon holds or the weapon's trigger activation. The contours of the M6 are relatively unobtrusive- blending in well to the contours of the host weapon. Individuals with larger hands or users that anticipate the use of thick gloves will be pleased to discover that it does not steal valuable space from in front of the trigger guard- ensuring that a favored two hand hold is not likely to be encumbered.
		The ITI M6 was mounted on a stock Glock G-31 and an Uncle Mike's brand tactical holster was fitted to the pair. Due to the slightly wider girth caused by the lateral protrusions of the light, the required carry holster has slightly more bulge than one for a gun without the light attached. The G-31/M6 combination was quite fast and smooth to draw and re-holster- being only slightly slower to draw than a pistol without the light attached. Mean draw time (Thumb-break open) was 1.22 seconds (compared with 1.0 seconds for the weapon alone)
Pros		Minimal protrusion beyond muzzle \| Form-factor requires only a slightly bulkier holster \| Shock protected bulb\| Smooth attachment \| Modest lateral protrusion \| Fast draw from dedicated holster\| Very bright for it's price point \| Very good track record and large user base \|Mountable to various weapons \| Flexible accessory range
Cons		Asymmetrical use model may add cognitive overhead especially during training\| Proprietary bulb is more expensive and difficult to find\| Faint battery orientation aids \| English only instructions \| Battery compartment lid may be easy to loose
Summary Conclusions		The ITI M6 is the natural result of technological evolution from the original M3 tactical lgiht that established the ergonomic foundation on which subsequent weapons mounted lights have evolved over the years.Though not a perfect aim assist, the laser component is a welcome feature that adds an additional layer of non-lethal intimidation as well as providing ample illumination for night vision equipment.
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Insight Technology Inc. - M6X Tactical Illuminator
Overall Score> 4.75 Stars (Out of 5 Maximum)

Dimensions & Weight Case Material Case Features Case Access Type Switch Type Reflector Type Lens Type Bulb Type Circuit Beam Type Beam Characteristics Overall Output Nominal Color Battery / Power Type Battery Life (advertised) Environmental Protection Mounting Laser/Bore Divergence Special Items of Note Warranty Retail Availability & Cost	....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......	3.65"/92mm,W=1.6"/41mm,H=2.1" Weight W/Batteries=4.4oz Composite polymer Removable bezel / Battery Compartment Threaded bezel / Composite backplate & steel latch Asymmetrical ambidextrous lever High polish- integrated in bezel Polycarbonate - integrated in bezel Proprietary mount - tungsten halogen, xenon filled Direct Drive (Un-regulated) Combination Spot/flood Bright hotspot /Wide corona 125 Lumens (Advertised) Color temperature (estimated) 3,800ºK 3V Cell Type, 2 x CR123A- lithiums - included 60 Minutes (Advertised) O-ring seal in bezel and Battery compartment Glock/NATO/Weaver Rail 2.2" Proprietary mount bulb / various accessories available / Waterproof to 66 ft. for 2 hours 1 Year warranty $395.00 MSRP as evaluated http://insightlights.com
General Description		The Insight Technology Inc. M6X Tactical Illuminator is the evolutionary advancement of the M6, one of the first dedicated tactical lights to be offered for the Glock pistol rail. Like the M6, it has also found favor as an accessory for several other types of small firearms - due in part to its compact form-factor, bright output and and light weight. It's a viable accessory light for any firearm through the use of interface adapters, mounts and remote switches- just like the M6. Its design conforms to the pistol's contours at the rail as well as at the trigger-guard. The fabrication material seems to be the same as that from which the pistols are made (unconfirmed) - a black composite polymer. The ITI M6X Tactical Illuminator allows the operator of a Glock pistol to activate the light and also operate the pistol without changing hand positions. The M6X allows for asymmetrical control of Off, momentary On or Constant On states from one ambidextrous switch lever and with the use of either the left or right hand. The M6X advances on the success of the M6 by adding some significant improvements. These include the following: -A better designed bulb and reflector combination - resulting in greater output and throw -A wider rail bar improves user comfort and minimizes dismount effort. -A better designed battery compartment lid- combines an rubber gasket seal with a sturdy and easier to access steel spring clip- for faster more secure battery changes as well as waterproofness down to 66' for 2 hours. The laser's exit pupil is 2.2" divergent from the barrel's bore center
Form Factor & Build		Since the ITI M6X is designed to perfectly integrate with the host pistol; it effectively makes use of the available space beneath the accessory rail. Due to the two-astride arrangement of batteries, its overall width is wider than that of the host pistol . This arrangement gives it a streamlined look-making it hang down to just line up with the bottom of the trigger guard. It slightly protrudes forward of the typical Glock muzzle- but in no manner interferes with aim or projectile discharge. The build quality and finish are equal to that of the Glock pistols. There are no rough edges and threading and fit are excellent and the color matches that of the pistol. Due to the added space devoted to the laser component, the M6X, like the M6, hangs down more than thier non-laser enabled cousins.
Mount		The ITI M6X mounts directly, and without any adaptation or adjustment, to any Glock designed accessory rail that is conforming to the Glock/NATO/Weaver Rail metrics. Attachment is very smooth and quick. Seating is confirmed with an audible 'click'. There's no rattle or 'play' in the fit and there are no significant gaps between the light and the pistol. Dismounting is effected by a disengagement of the rail lock bar with the first finger and thumb of one hand and then a sliding of the light along the rail and off the front of the pistol. Thanks to a generously wide rail bar this procedure will not harm bare fingers and makes removal of the light much easier with gloves on.
Switches		The ITI M6X uses an ambidextrous and asymmetrical lever that allows for control of the light from either the left or right side. Pressing lightly downwards on the 'see-saw' witch lever(s) on either side, momentarily activates the light. Releasing the switch lever(s) conversely returns the light to the Off state. Constant On activation with the left-side thumb is effected through firmer upward pressure on the switch lever. Left side thumb de-activation from Constant On, is effected by a sharp downward 'flicking' of the switch till it disengages and is returned to full Off-line, Constant On activation with the Right-side trigger finger is effected through firmer downward pressure on the right side switch lever. Right side trigger finger de-activation from Constant On, is effected by a sharp upward 'flicking' of the switch till it disengages and is returned to full Off. The result of this asymmetrical procedural model is that left handed and right handed users must learn opposite procedures to implement constant On / Off states. The M6X switch improves on the M6 by being larger- making it a harder target to miss, especially in haste. Numerous accessory backplates afford the user a range of activation options to suite specific end-user needs.The laser component is controlled through the separate selector dial switch that is located directly beneath the 'see-saw' lever switch that controls the white light. In addition to this 'state' switch, the second switch positioned at the bottom most edge of the unit, allows for mode selection between laser and light functions as well as full Off.
Battery		The battery compartment is opened (while the light is dismounted) by disengaging the spring steel compartment lid latch till it's free of the light's top edge. Batteries will then freely come out for replacement. The M6Xspring clip is a great improvement over the tricky clip that is employed in the M6.Tiny and faintly embossed pictograms are printed outside on the left and right sides of the unit to aid in battery polarity orientation. Once batteries have been replaced, the lid is put back on and re-latched to the top edge of the compartment. This process is quick and sure giving the user a clear auditory and tactile confirmation that the lid is indeed closed. The fact that the improved M6X battery compartment is waterproof makes it a contender in high water exposure risk environments. Were the light to inadvertently fall into water or need to be used under water, the operator of the M6X can be sure that the light will continue to operate and that no harm has been done to it's internal components.
Bulb		The proprietary mount M6X bulb is larger than the M6's at though based on the same design,the M6X bulb is different from the M6 bulb; it is designed with a Shock Suppression System, which combines rubber feet on the bulb holder, rubber grommets in the reflector, and a softer spring. The bulb assembly is easily replaced by first un-screwing the bezel from the casing. Knurling on the bezel affords ample grip surface. Once the bezel is off, the bulb assembly is simply pulled out of its dedicated inset and a replacement put in its place. There is no way that the bulb's contacts could fail to make a connection with the body's contacts and the hefty spring surrounding the bulb is there to absorb some of the shock that occurs during weapon firing and recoil. After nearly 50 test fired rounds, the bulb of the M6X remained operational and intact.
Human Factors & Usability		The ITI M6X is contoured to visually and ergonomically blend in with the pistol. Attachment is intuitive and easy - with both a tactile and audible "click" signaling that proper seating has occurred onto the weapon. The activation switch goes into the momentary On position smoothly and constant On or Off require a firm commitment that is rewarded with a distinct and audible "click". This action ensures that the operator need not focus too much attention or energy into the process of activating the light- especially since they are using the same hand to control grip and firing of the weapon. The added finger pressure required for Constant On ensures that inadvertent activation of Constant On is mitigated against. It is unfortunate that the operational process is asymmetrical since that requires significant cognitive effort for a (strong) right handed user to properly operate the light in the event that they would wish to use their weak hand instead. Another problem is that left handed users must be instructed differently. To their credit, Insight Technology has rewritten the operating manual for the M6X and they've added an accessory remote switch that mitigates the potential for accidental discharge when using the trigger finger to activate the light. The instructions now simply describe the functionality of the switch without recommending that the trigger finger be used for light activation. The mention of an optional ambidextrous and symmetrical Switch Backplate affords a safer usage scenario that allows for light activation with a third finger on the strong hand and liberates the trigger finger as well as support hand from responsibility in activating the light. Though this accessory only allows for momentary activation of the M6X, it is still provides an excellent alternative to the potentially confusing usage of the standard switch.
Beam Characteristics & Light Quality		The M6X produces a beam that is a combination of a wide corona pierced by a focusable and distinctly oval hotspot at its center. As such, it's a versatile illumination profile (Context Inclusive Illumination Window or CIIW) that combines a far throwing hotspot with a wider disc of light that adds context and aids in navigation, especially in dark interior spaces. The M6X generates a slightly amber color balance of white light that effectively compensates for blue light scatter caused by airborne particles such as smoke,dust or water vapor. Unlike the distinctly amber/orange hue of lower power flashlights, the M6X's light is perceived as being much whiter to the eye. This color temperature also promotes color differentiation within the subject and scene. As might be expected, color temperature falls as the output diminishes so that it may be around 3,200ºK once the light has reached 50% of maximum intensity.
Task performance optimization		Based on trials that included 'room clearing'- we concluded that the Insight Technology M6X is well suited to the purpose for which it was probably intended- that is, illuminating the target for positive identification in a dim or dark room. In a totally dark interior space it provides a great deal of illumination to allow the shooter to properly survey the scene as well as to aim the pistol. Even in outdoor scenarios it was bright enough to outshine some of the most popular handheld flashlights used by law enforcement personnel. Because weapons mounted lights are often used as non-lethal compliance tools, a beam bright enough to temporarily blind the subject is preferred. The M6X is excellent in this regard, even up to a distance of around 60'.
Laser task performance optimization		The integrated laser aiming module, provides ample illumination for use with Infra-red night vision equipment as well as being an aim assist to supplement 'iron' or other aiming systems onboard. Being 2.2" off bore axis, the laser pointer's deviation from the target was more accutely noticable at distances ± 10 meters from the target point. This could translate into a substantial margin of aim error at great distances but less so at distances of between 20 meters and one meter. In many cases, the laser is used more as a non-lethal compliance tool than as a bon fide aim assist. As with most red-diode lasers, the laser dot generated by the M6X is less noticable as the ambient level of illumination increases and may well be useless in bright daylight. The switch is simple to learn and to commit to muscle memory. It's nothing more than a rotary dial with four positions. All Off, All On, Laser Only and Light Only. Laser aimpoint adjustment is performed with the assistance of a tiny slot screw-driver that is included for this task. Windage & Elevation are adjusted with the weapon pre-sighted on target and on a bench. Due to the ocular parallax phenomenon, there really is only one accurate target distance and the laser should be re-set for differing anticipated target distances on an exponential scale. That is- as the distance between the subject/target and the laser exit pupil halves, the divergence between bore aim and laser aim will increase by an exponential factor. The farther away that the laser exit pupil is from the bore axis , the greater the divergence.
Quality of match to host product		The M6X almost perfectly matches the Glock pistol. Its thoughtful attention to ergonomics is reflected in the fact that it barely interferes with weapon holds or the weapon's trigger activation. The contours of the M6X are relatively unobtrusive- blending in well to the contours of the host weapon. Individuals with larger hands or users that anticipate the use of thick gloves will be pleased to discover that it does not steal valuable space from in front of the trigger guard- ensuring that a favored two hand hold is not likely to be encumbered. Due to slightly increased heft over the M6, the M6X happens to be very slightly wider and significantly longer than the M6. It therefore exchanges compactness for better performance but without adding a noticeable amount of weight.
Accommodation for holster carried pistols		The ITI M6X was mounted on a stock Glock G-31 and an Uncle Mike's brand tactical holster was fitted to the pair. Due to the slightly wider girth caused by the lateral protrusions of the light, the required carry holster has slightly more bulge than one for a gun without the light attached. The G-31/M6X combination was quite fast and smooth to draw and re-holster- being only slightly slower to draw than a pistol without the light attached. Mean draw time (Thumb-break open) was 1.2512 seconds (compared with 1.0 seconds for the weapon alone)
Pros		Form-factor requires only a slightly bulkier holster \| Shock protected bulb\| Smooth attachment\| Glock quality manufacturing \| Fast draw from dedicated holster\| Brightest in class\| Very good track record and large user base \|Mountable to various weapons \| Flexible accessory range \| Waterproof \| Snag resistant contours \| Punchy laser brightness
Cons		Asymmetrical use model may add cognitive overhead especially during training\| Proprietary bulb is more expensive and difficult to find\| Faint battery orientation aids \| English only instructions \| battery compartment lid may be easy to loose \| Slightly longer and wider bezel than its predecessor the M6 \| Tiny mode switch could be tricky to accurately manipulate with tatical gloves on \| Substantial parallax limts range of accurate aim
Summary Conclusions		The ITI M3 established the ergonomic foundation on which subsequent weapons mounted lights have evolved over the years. The M6X advances on that track record by adding significant improvements without changing the fundamental form-factor or functionality of the M6. Though not a perfect aim assist, the laser component is a welcome feature that adds an additional layer of non-lethal intimidation as well as providing ample illumination for night vision equipment.
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Laser Devices- Las Tac 2
Score:5 Stars

Dimensions & Weight Case Material Case Features Case Access Type Switch Type Reflector Type Lens Type Bulb Type Circuit Beam Type Beam Characteristics Overall Output Nominal Color Battery / Power Type Battery Life (advertised) Environmental Protection Mounting Laser/Bore Divergence Special Items of Note Warranty Retail Availability & Cost	....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......	L=3.28"/101.4mm,W=1.88" 39mm,H=1.85" 49.55 mm Weight W/Batteries=3.9oz/209gm High Impact polymer / Composite backplate & paddles Hinged backplate Threaded head for interchageability Simultaneous /Symmetrical ambidextrous 'rocker' lever N/A + stochastic for LuxeonIII LED head N/A + Polycarbonate for LuxeonIII LED head 5W Luxeon - Shockproof Regulator circuit Combination Spot/Flood Bright hotspot to medium/wide flood Unknown LuxeonV LED head -(estimated) 5,000ºK 3V Cell Type, 2 x CR123A- lithiums - included .75Hrs + to 50%, diminished thereafter Proprietary rubber gasket seal on battery compartment cover / 'O' ring Sealed bezel Glock/NATO/Weaver Rail + Picatinny adapter 1.1"/ Laser Type: Laser diode Class IIIa <5m/635nM (SPP) Laser module can be exchanged with Incandescent or LED tactical flashlight heads 1 Year (excludes bulb & batteries) $297.00 (laser Only) MSRP as evaluated http://www.laserdevices.com
General Description		The Laser Devices- Las Tac 2 is a modular light that offers the operator the choice of three head modules, the Las Tac 2 is the first Glock mountable light to use the Luxeon 5W LED emitter and a reflector instead of a bulb. Key advantages of the LED light source include: - I'ts shockproof - Emitted light is daylight color balance - The output is regulated with circuitry The advantage of the reflector versus the highly spot focused optic found on another competing light is that the reflector delivers a context inclusive beam that reveals detail in the scene in a 70º angle of illumination as well as placing a bright hotspot directly onto the target subject. The ability to swap out the Luxeon III head for an incandescent one or a laser , means that the tactical operator may customize thier Glocks light to the task at hand. The laser module that we evaluated puts out a beam that is twice the intensity of that from competing manufacturers. Another advantage of the single task approach to the Las Tac 2 design is that form factor or 'bulk' can be minimized- making the Las Tac 2 the smallest of the Glock mountable tactical lights.
Form Factor & Build		Since the Las Tac 2 is designed to perfectly integrate with the host pistol; it effectively makes use of the available space beneath the accessory rail. Due to its efficient use of volume and use of aluminum construction; its overall width is barely wider than that of the host pistol . This arrangement gives it a streamlined look-making it hang down to just line up with the bottom of the trigger guard. It protrudes forward of the typical Glock muzzle- but in no manner interferes with aim or projectile discharge. The build quality and finish are superb, making it a good match in quality to the Glock pistol itself. There are no rough edges. Rail fit is excellent and adjustable for precision. The body color does match that of the pistol - Though it's finish is a dead matte HA III- Ideally suited to tactical operatives. Of all the 2-cell lights for the Glock, the Las Tac 2 is the most compact.
Mount		The Las Tac 2 mounts directly, and without any adaptation, to any Glock designed accessory rail that is conforming to the Glock/NATO/Weaver Rail metrics. Attachment is very smooth and quick. Seating is confirmed with an audible 'click'. There's no rattle or 'play' in the fit and there are no significant gaps between the light and the pistol. Dismounting is effected by a disengagement of the rail lock bar with the first finger and thumb of one hand and then a sliding of the light along the rail and off the front of the pistol. Thanks to a very wide rail bar, this procedure will not harm bare fingers and makes removal of the light much easier with gloves on as well.
Switch		The Las Tac 2 uses an ambidextrous and symmetrical rocker lever that allows for control of the light from either the left or right side. Both momentary and constant activation are symmetrical. The detent Off position is with the switch at the neutral (centered) position. 1 - Pressing the switch lever 'paddles' up on either the left or right side of the switch lever activates a momentary 'On' mode. Releasing the switch lever(s) conversely returns the switch to its detent position and the light back to the Off state. 2- Pressing either paddle directly down on either side- clicks the switch into fully locked 'On'. A swift upwards pressure on the switch will return it to full Off state. The result of this symmetrical usage model is that left handed and right handed users may learn the same procedure to implement momentary as well as constant On / Off states. The Las Tac 2 switch exhibits advanced user-centricity in that it bifurcates the axes for momentary and constant activation. The result is that cognitive overhead is minimized to learning a simple interactionary model: 1.0 - Pressing upwards on either side of the switch = Momentary On 1.1 - Releasing pressure turns the unit fully Off 2.0 - Pressing downwards till 'click' on either side of the switch = Full On 2.1 - Flicking the switch to the centered 'detent' position turns the unit fully Off Committing such a model to muscle memory is easy and mitigates against unintentional 'Full-On' activation, when only momentary On is desired.
Battery		The battery compartment is opened (while the light is dismounted) by disengaging the polymer compartment lid latch to disengage if from the compartment's top edge.The lid, being hinged to the top of the unit at a stainless steel hinge pin , may then be swung open to release batteries inside. Batteries will then freely come out for replacement. The Las Tac 2 backplate is a great improvement over compartment lids that are not tethered to their units- because it mitigates loss and accelerates the speed of closure. Since the user of the Las Tac 2 is not required to properly orient and then engage one edge of the lid before securing the other - as is the case in all other such lights for the Glock, the process becomes as familiar as opening and closing a door. The user must simply close the lid and lock it in place with the latch. To support speedy and correct polarity orientation, a plus '+' and a Minus '-' sign are printed on the compartment lid to serve this purpose.This leaves no doubt as to which way the batteries should go in, especially if the user is viewing the unit directly from behind.This level of attention to detail, speaks of a high regard by the designers for user centered design. A proprietary rubber gasket elegantly outlines the inside edge of the battery compartment lid (backplate) to protect the compartment from water entry.
Bulb		The Las Tac 2's design allows for simple head exchanges that require only the simple uscrewing of one head in order to replace it with another. Because the LED module is sealed, there are no parts that may fall out or become lost. The same is true of the laser module.
Human Factors & Usability		The Las Tac 2 is contoured to visually and ergonomically blend in with the pistol. Attachment is intuitive and easy - with both a tactile and audible "click" signaling that proper locking to the weapon has occurred . The activation switch goes into the momentary On position smoothly and constant On or Off require a firm commitment that's rewarded with a distinct and audible "click". This action ensures that the operator need not focus too much attention or energy into the process of activating the light- especially since they are using the same hand to control grip and firing of the weapon. As mentioned previously, the unique operational procedure of the Las Tac 2 makes it easy to learn and to use. Since this process is symmetrical , an operator may change 'strong' hands without needing to re-learn usage. Similarly, left-handed and right-handed individuals are simply implementing the same process in different hands. Thanks to a tethered backplate, users don't have to worry about keeping track of the battery compartment cover, since it's hinged onto the unit. Tactical operators that plan to use the laser exclusively, will simply not require the LED or incandescent head modules. For those that prefer to only use a white light then the LED or incandescent heads are available as accessories. The large switch paddles make operating the Las Tac 2 a 'surefire' operation even with thick tactical gloves- as they provide a larger haptic target -about three times the surface area of competing products.
Beam Characteristics & Light Quality		The Las Tac 2 LED head produces a beam that is a round hotspot surrounded by a medium wide corona. Thanks to slight reticulation, the beam pattern is smooth with a gentle gradation from hot spot to corona. As such, it's a specialized illumination profile described as a Context Inclusive Illumination Window or CIIW that concentrates most of the beam's energy into hotspot while providing ample peripheral illumination. The Las Tac 2 generates a near daylight color balance of white light that supports a high degree of color differentiation but it's also susceptible to light scatter in scenarios of high dust,smoke or water vapor.Due to the fact that blue spectrum rays are more strongly refracted than amber ones, some of the Las Tac 2's rays will bounce back in image degrading glare or scatter .Though such a predicament can easily be corrected with filtration, it effectively encourages the use of the Las Tac 2 for close range encounters and indoors, rather than in situations that contain light scattering elements over a long distance.
Task performance optimization		Based on trials that included 'room clearing'- we concluded that the Surefire Las Tac 2 is well suited to the purpose for which it was probably intended- that is, illuminating the target for positive identification in a dim or dark room. In a totally dark interior space, it provides a great deal of illumination at the subject to allow the shooter to properly confirm it's identity and location as well as to aim the pistol. Because weapons mounted lights are often used as non-lethal compliance tools, a beam bright enough to temporarily blind the subject is preferred. Las Tac 2 is effective in this up to a distance of around 30'.
Laser task performance optimization		The integrated laser aiming module, provides ample illumination for use with Infra-red night vision equipment as well as being an aim assist to supplement 'iron' or other aiming systems onboard. Being 1.12" off bore axis, the laser pointer's deviation from the target was more acutely noticeable at distances ± 9 meters from the target point. This could translate into a substantial margin of aim error at great distances but less so at distances of between 150 meters and one meter. In many cases, the laser is used more as a non-lethal compliance tool than as a bon fide aim assist. As with most red-diode lasers, the laser dot generated by the M6 is less noticeable as the ambient level of illumination increases and may well be useless in bright daylight. The switch is simple to learn and to commit to muscle memory. It's nothing more than a rotary dial with four positions. All Off, All On, Laser Only and Light Only. Laser aim point adjustment is performed with the assistance of a tiny slot screw-driver that is included for this task. Windage & Elevation are adjusted with the weapon pre-sighted on target and on a bench. Due to the ocular parallax phenomenon, there really is only one accurate target distance and the laser should be re-set for differing anticipated target distances on an exponential scale. That is- as the distance between the subject/target and the laser exit pupil halves, the divergence between bore aim and laser aim will increase by an exponential factor. The farther away that the laser exit pupil is from the bore axis , the greater the divergence.
Quality of match to host product		The Las Tac 2 is molded polymer and a black hue similar to that of the Glock pistol itself.As such it's a dedicated match in color and material. Its thoughtful attention to ergonomics is reflected in the fact that it barely interferes with weapon holds or the weapon's trigger activation. The contours of the Las Tac 2 are totally unobtrusive- complimenting the contours of the host weapon. Individuals with larger hands or users that anticipate the use of thick gloves will be pleased to discover that it does not steal valuable space from in front of the trigger guard- ensuring that a favored two hand hold is not likely to be encumbered. It does protrude forward slightly,but in no manner interferes with the muzzle.
Accommodation for holster carried pistols		The svelte form-factor of the Las Tac 2 makes it much easier to fit a holster to it. Holster draw was barely slowed down as a result of the light.The Las Tac 2 was mounted on a stock Glock G-31 and an Uncle Mike's brand tactical holster was fitted to the pair. The G-31/ Las Tac 2 combination was quite fast and smooth to draw and re-holster- being only slightly slower to draw than a pistol without the light attached. Mean draw time (Thumb-break open) was 1.22 seconds (compared with 1.0 seconds for the weapon alone). The compact size of the light means that holster bulge is minimized.
Pros		Very compact size \| Shockproof emitter\| Smooth attachment\| Fast draw from dedicated holster\| Decent Warranty and aftermarket support\| Mountable to various weapons \|Waterproof \| Hinged backplate \|modular design & construction \| Laser head generates a beam that's twice as bright as the nearest competing brand.
Cons		White LED beam is not as 'punchy' as incandescent counterparts.
Summary Conclusions		The Laser Devices Las Tac 2 capitalizes on Laser Devices' experience and success in making tactical weapons lights and especially Laser Aiming Modules. With the Las Tac 2 customers have the choice of dedicated modular specialized illumination aids for thier Glock pistols. Laser Devices has taken a currentt rend cue offering an LED option in addition to the an incandescent bulb for a source of illumination. The Las Tac 2 not only demonstrates how the new Luxeon generation of emitters can be used to meet the requirements of law enforcement professionals, it also proves that it's possible to get a lot of light from a very small package . Handgun users who've been wishing that a more modular tactical light would soon appear, have their prayers answered in the Las Tac 2. It adds a new twist to the growing trend of adding supplemental illumination to hand guns by insinuating that modularity is now a lead to follow.
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Laser Devices- Blast 2
Score> 5 Stars

Dimensions & Weight Case Material Head Material Case Access Type Switch Type Reflector Type Lens Type Bulb Type Circuit Beam Type Beam Characteristics Overall Output Nominal Color Battery / Power Type Battery Life (advertised) Environmental Protection Mounting Laser/Bore Divergence Special Items of Note Warranty Retail Availability & Cost	....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......	L=3.28"/101.4mm,W=1.88"/39.00mm,H=1.85"/49.55mm Weight W/Batteries=3.9 oz/209gm High Impact polymer Aircraft Aluminum HAIII Threaded bezel / Spring loaded battery compartment cover Symmetrical ambidextrous lever + 4-position mode dial Stochastic High Polish- integrated in bezel Pyrex High-Pressure 4.8V Xenon /shock isolated Direct Drive (Un-regulated) Combination soft spot/flood Bright hotspot /Medium-wide corona 95 Lumens (Advertised) Color temperature (estimated) 3,400ºK at full power 3V Cell Type 2 x CR123A- lithiums - included 70 Minutes to 25% O-ring seals Waterproof to 20 meters Glock/NATO/Weaver Rail 1" /Laser Type: Laser diode Class IIIa <5m/635nM (SPP) Light head may be interchanged with optional LED version 1 Year warranty $ 390.00 MSRP as evaluated http://www.laserdevices.com
General Description		The Laser Devices Blast 2 is a an incandescent mountable light that combines the output of a high pressure Xenon lamp with the functionality of an integrated laser. Unlike the Blast 2, from the same company, the Blast 2 doesn't require that the user switch heads in order to select either the laser or the light- both are integrated into one device .Though incandescent bulbs are prone to 'blow-outs' -due in part to the intense shock transmitted during the discharge of a round, the Blast 2 head assembly is designed in such a way that the bulb is sandwiched between two coiled springs- these absorb the energy of a sudden shock, much in the same way that the coils of a mattress cushion the bounce or a person jumping up and down on a bed. The Blast 2 conforms to the Glock rail system . The Blast 2 is injection molded from high impact polymer- similar to that used in the manufacture of the Glock pistol receivers. The light allows the operator of a Glock pistol to activate the light and also operate the pistol without changing hand positions. It allows for asymmetrical control of Off, momentary On or Constant On states from one ambidextrous switch lever and with the use of either the left or right hand. Even though it's similar in many ways to other lights of its type, the Blast 2's special features really put it in a class of its own.The laser's exit pupil is1" divergent from the barrel's bore center.This means that there is technically less ocular parallax phenomenon and conversely, less margin for aimpoint error as the subject to weapon distance changes.
Form Factor & Build		Since the Blast 2 is designed to perfectly integrate with the host pistol; it effectively makes use of the available space beneath the accessory rail. It protrudes forward of the typical Glock muzzle- but in no manner interferes with aim or projectile discharge. Because it's made from polymer- and has thicker walls than it's aluminum cousin, it's noticeably wider than the pistol itself. The build quality and finish are good, making it a good match in quality to the Glock pistol itself. There are no rough edges but a slight 'boxiness' to the laser assembly as contrasted with the battery casing, makes it appear 'hybrid'. This is not in any way a negative reflection on this product and since all physical contact with holsters, gloves, and the operators hands are with the contoured bottom half of the device- no ergonomics issues are likely to result. Rail fit is excellent and adjustable The body color does match that of the pistol. Of all the 2-cell laser enabled lights for the Glock, the Blast 2 is the least compact.
Mount		The Blast 2 mounts directly, and without any adaptation, to any Glock designed accessory rail that is conforming to the Glock/NATO/Weaver Rail metrics. Attachment is very smooth and quick. Seating is confirmed with an audible 'click'. There's no rattle or 'play' in the fit and there are no significant gaps between the light and the pistol. Dismounting is effected by a disengagement of the rail lock bar with the first finger and thumb of one hand and then a sliding of the light along the rail and off the front of the pistol. Thanks to a very ergonomic and tenacious rail bar, this procedure will not harm bare fingers and makes removal of the light much easier with gloves on as well.
Switch		The Blast 2 uses an ambidextrous and symmetrical rocker lever- identical to that on the Las Tac 2 that allows for control of the light from either the left or right side. Both momentary and constant activation are symmetrical. The detent Off position is with the switch at the neutral (centered) position. 1 - Pressing the switch lever 'paddles' down on either the left or right side of the switch lever activates a momentary 'On' mode. Releasing the switch lever(s) conversely returns the switch to its detent position and the light back to the Off state. 2- Pressing either paddle directly up on either side- clicks the switch into fully locked 'On'. A swift upwards pressure on the switch will return it to full Off state. The result of this symmetrical usage model is that left handed and right handed users may learn the same procedure to implement momentary as well as constant On / Off states. The Blast 2 switch exhibits advanced user-centricity in that it bifurcates the axes for momentary and constant activation. The result is that cognitive overhead is minimized to learning a simple interactionary model: 1.0 - Pressing downwards on either side of the switch = Momentary On 1.1 - Releasing pressure turns the unit fully Off 2.0 - Pressing upwards till 'click' on either side of the switch = Full On 2.1 - Flicking the switch to the centered 'detent' position turns the unit fully Off Committing such a model to muscle memory is easy and mitigates against unintentional 'Full-On' activation, when only momentary On is desired.
Battery		The battery compartment is opened (while the light is either on the weapon or dismounted) by depressing the polymer compartment lid latch to disengage if from the compartment's top edge.The lid, being hinged to the top of the unit at a stainless steel hinge pin , may then be swung open to release batteries inside. Batteries will then freely come out for replacement. The Blast 2 backplate is a great improvement over compartment lids that are not tethered to their units- because it mitigates loss and accelerates the speed of closure. Since the user of the Blast 2 is not required to properly orient and then engage one edge of the lid before securing the other - as is the case in all other such lights for the Glock, the process becomes as familiar as opening and closing a door. The user must simply close the lid and lock it in place with the latch. To support speedy and correct polarity orientation, a plus '+' and a Minus '-' sign are printed on the compartment lid to serve this purpose.This leaves no doubt as to which way the batteries should go in, especially if the user is viewing the unit directly from behind.This level of attention to detail, speaks of a high regard by the designers for user centered design. A proprietary rubber gasket elegantly outlines the inside edge of the battery compartment lid (backplate) to protect the compartment from water entry. Part of the strategy that the Blast 2's designers used in making it a compact light, was to use economy of volume.
Bulb		The Blast 2's design allows for simple head exchanges that requires only the simple unscrewing of one head in order to replace it with another .Inside the head, a 4.8V High Pressure Xenon bulb is mounted on a platform and the attached rear spring forms one contact as well as acting as a shock absorber .Unscrewing the head causes the bulb assembly to fall out, making it both losable as well as easy to replace. Extra caution should therefore be exercised when performing bulb replacements- especially in the field. A spare bulb assembly should also be carried for quick field replacements.
Human Factors & Usability		The Blast 2 is partially contoured and though it doesn't blend especially well with the pistol - the ease of use afforded by both the main paddles as well as the mode selection switch, make it highly usable - especially in haste with gloved hands. Attachment is intuitive and easy - with both a tactile and audible "click" signaling that proper locking to the weapon has occurred . The activation switch goes into the momentary On position smoothly and constant On or Off require a firm commitment that's rewarded with a distinct and audible "click". This action ensures that the operator need not focus too much attention or energy into the process of activating the light- especially since they are using the same hand to control grip and firing of the weapon. The unique operational procedure of the Blast 2 makes it easy to learn and to use. Since this process is symmetrical , an operator may change 'strong' hands without needing to re-learn usage. Similarly, left-handed and right-handed individuals are simply implementing the same process in different hands. Thanks to a tethered backplate, users don't have to worry about keeping track of the battery compartment cover, since it's hinged onto the unit. The fact that the backplate is not removable, makes upgrades and cross-grades impossible on this model.In contrast to the often tiny model selection switches of competing products, the Blast 2 employs a left side mounted lever that parallels the axis of the main switch paddles- keeping the variation of behavior between On/Off Selection and mode selection down to a minimum. The mode positions are clearly marked for visual identification- taking the guesswork out of answering the question "What is the currently selected mode". While other contenders also have detent marked mode switches, they are not easily 'readable' and because they operate in a 90º axis to the main On/Off switches, may add cognitive overhead to the task of hurriedly determining the state of the light and then making subsequent changes- especially under duress.even the left mounted laser Windage and Elevation screws are marked "U/D" for Up / Down and "L/R" for Left/Right. This attention to labeling demonstrates a keen awareness of the needs of the operator for instant and unequivocal feedback and on the fly support. In an ideal world, both the mode selection switch as well as the laser adjustment screws would mirror to the right side of the device. This small detail is not nearly as valuable to the end user as the symmetry ambidextrousness of the main paddle switch.
Beam Characteristics & Light Quality		The Blast 2 produces a beam that is soft hotspot surrounded by a medium wide corona As such, it's a specialized illumination profile described as a Context Inclusive Illumination Window or CIIW that concentrates part of the beam's energy into soft hotspot while spreading the rest to a wider corona. The Blast 2 generates a warm Amber/Straw/White light that is more pleasing to the darkness adapted eye than pure white light and in addition, is not as susceptible to light scatter in scenarios of high dust,smoke or water vapor.Due to the fact that Amber/Straw/White spectrum rays are less strongly refracted than pure white or bluish ones, fewer of the Blast 2's rays will bounce back in image degrading glare or scatter.The beam pattern created by the Blast 2's stochastic textured reflector, is completely lacking in voids, anomalies or irregularities that could distract the operator or hamper object identification or navigation. It shroud be pointed out that this is traded in exchange for a slight reduction in hotspot brightness and throw. Another advantage of the Blast 2 stochastic reflector is that it's ideally formulated to maximize focus without the need for user adjustment. Again, this results in reduced cognitive overhead and better ease of use.
Task performance optimization		Based on trials that included 'room clearing'- we concluded that the Laser Devices Blast 2 is well suited to the purpose for which it was probably intended- that is, illuminating the target for positive identification in a dim or dark room. In a totally dark interior space, it provides a great deal of illumination at the subject to allow the shooter to properly confirm it's identity and location as well as to aim the pistol. Because weapons mounted lights are often used as non-lethal compliance tools, a beam bright enough to temporarily blind the subject is preferred. Blast 2 is effective in this up to a distance of around 50'. In addition, the medium wide - context inclusive beam reveals much content at the periphery of the subject focus, making it effective for navigation as well as 'clearing' tactics..
Laser task performance optimization		The integrated laser aiming module, provides ample illumination for use with Infra-red night vision equipment as well as being an aim assist to supplement 'iron' or other aiming systems onboard. Being 1" off bore axis, the laser pointer's deviation from the target was more acutely noticeable at distances ± 15 meters from the target point. This translates into a substantial forgiveness of error at great distances and less so at distances of between 20 meters and one meter, than with other lasers we encountered in this comparison. In many cases, the laser is used more as a non-lethal compliance tool than as a bon fide aim assist. As with most red-diode lasers, the laser dot generated by the Blast 2 is less noticeable as the ambient level of illumination increases and may well be useless in bright daylight. The switch is simple to learn and to commit to muscle memory. It's nothing more than a rotary dial cleverly disguised as another lever with four positions> All Off, All On, Laser Only and Light Only. Laser aim point adjustment is performed with the assistance of a tiny slot screw-driver that is included for this task. Windage & Elevation are adjusted with the weapon pre-sighted on target and on a bench. Due to the ocular parallax phenomenon, there really is only one accurate target distance and the laser should be re-set for differing anticipated target distances on an exponential scale. That is- as the distance between the subject/target and the laser exit pupil halves, the divergence between bore aim and laser aim will increase by an exponential factor. The farther away that the laser exit pupil is from the bore axis , the greater the divergence.As we stated before, the closer proximity of the Blast 2's laser exit pupil to the bore center. give it an upper hand in terms of accuracy and forgiveness to the ocular parallax phenomenon.
Quality of match to host product		The Blast 2 is a fairly good match to the host pistol and in addition, may be used on a variety of long guns that are capable of mounting Picatinny rail accessories. In terms of effectiveness and ease of use, it allows the operator and enforcer to concentrate more on tactics and less on finding and operating switches.
Accommodation for holster carried pistols		The somewhat bulky form-factor of the Blast 2 makes it harder to fit a holster to it. Holster draw was slowed down as a result of the light.The Blast 2 was mounted on a stock Glock G-31 and an Uncle Mike's brand tactical holster was fitted to the pair. The G-31/ Blast 2 combination was satisfactory to draw but fabric kept snagging on the mode selection switch as well as on the lock bar - left and right. Mean draw time (Thumb-break open) was 1.9 seconds (compared with 1.0 seconds for the weapon alone). A dedicated Blast 2/Glock holster may be in order for this otherwise excellent light.
Pros		Shock-isolated bulb assembly\| Smooth attachment/detachment \| High quality manufacturing \| Mountable to various weapons \| Waterproof \| Hinged backplate \| Accurate and very bright laser\| Best In Class for usability/human factors
Cons		Not friendly to current crop of Glock holsters \| Not as bright a white light hotspot as some comparable lights \| Not adaptable to long gun / remote backplate
Summary Conclusions		The Blast 2 capitalizes on Laser Devices' extensive experience and success in making tactical lasers and weapons lights. With the Blast 2 they've raised the bar for laser brightness and accuracy. In addition, the careful attention to solid user interface design issues translate into the highest user performance enhancing product in its class. Though somewhat lacking in elegance and aesthetics, it's an 'all business' product that delivers the results that matter most to the enforcer and operator.Interchangeability of the incandescent head for one that contains a Luxeon V LED emitter- further expands options available to customers of the Blast 2.Other than the slight annoyance of locating a suitable tactical holster, there's nothing lacking in the Blast 2.
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Stars Rating Key

Rating - 5.0 Stars = Highly Recommended - Best In Class
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