Streamlight TLR-2 G, Tac Light, With Laser, C4 LED, 300 Lumens, Strobe, Green Laser, Laser Sight, Black 69250 Lightweight" compact" lithium battery powered Gun-Mounted Tactical Light with integrated aiming laser featuring the latest in shock-proof power LED technology and providing at least 2.5 hours of continuous run time when in dual mode with the high power visible laser. Rail clamp designed to rapidly attach/detach from side of weapon. Tethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement.