Crimson Trace LL-803 Laserguard Pro with a Tactical Flashlight, Heavy Duty Construction and Instinctive Activation for Glock 42 & 43, Defensive Shooting and Competition. BRIGHTNESS: 150 lumen flashlight with broad beam for maximum versatility, 515-532nm, visible GREEN LASER that is in conformance with and complies with 21 CFR 1040.10 with a max power output of 5mW for a Class 3R Laser – the brightest beam allowed by law. RUNTIME: 2 hours of battery life that runs on (1) CR2 battery (included) with Laser + Light, Laser Only, Light Only, and Laser + Light Strobe modes. EASE OF USE: Front activation button engages the laser immediately when the firearm is held in a normal firing grip – user installed – no gunsmithing required. RELIABLE: Factory sighted at 50 feet, but is fully user adjustable for Windage and Elevation with provided tool. FITS: Glock 42 & 43 Model. Crimson Trace LL-803 Laserguard Pro Laser Sight + Tactical Light for GLOCK 42 & 43. Powerful laser and tactical light from the industry leader. The LL-803 Laserguard Pro is a powerful yet compact laser sight and tactical light system for GLOCK 42 and 43 pistols. Featuring a bright laser and a 150 Lumen LED white light. Activation technology features CTC’s famed Instinctive Activation with a front button that engages the laser and light with a normal hold on the pistol. 5MW PEAK, 532NM, CLASS 3R GREEN LASER. 150 LUMEN LED WHITE LIGHT. FITS GLOCK 42 AND 43. WILL NOT FIT VARIANTS EQUIPPED WITH ACCESSORY RAILS.