Intensely bright, virtually indestructible rail-mounted tactical light, attaches to almost any gun in seconds. Provides a 630 lumen blast of light for maximum illumination while clearing a room or alley. This lightweight gun-mounted tactical light features the latest in shockproof LED technology for reliable operation. Rail clamp designed to rapidly attach or detach from side of weapon. Tethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement.