Fits Glocks and other Polymer-framed handguns with Tac Light RailsUses 3-Volt Lithium Batteries (Not Included) The all new MIL-spec design and construction of the M6X Tactical Laser Illuminator takes tactical lighting and target acquisition to the next level. - The penetrating power of 125 peak Lumens - Military-proven visible aiming laser - Waterproof to 20m/66ft - Insight's proven ambidextrous rocker switch - Optional backplates provide interchangeable switching to suit operator preference - Fits most tactical pistols and shoulder-fired weapons DIMENSIONS Pistol: 3.6" L x 1.6" W x 2.1" H WEIGHT Pistol: 4.4 oz. w/batteries WATERPROOF 66 ft. for 2 hours RUN TIME Minimum 60 min. continuous PEAK OUTPUT 125 lumens RANGE 30 meters LAMP TYPE Incandescent, xenon filled BATTERY TYPE (2) lithium 123, 10 year shelf-life VOLTS 6 DC TEMP. RANGE -32° to +65°C LASER OUTPUT POWER (max) 3.0 - 3.5mw, class IIIa LASER WAVELENGTH 650nm* LASER BORESIGHT RETENTION <1.5" avg. at 25m