Attaches to any picatinny rail The Streamlight TLR-7A Flex Weapon Light is a small and mighty 500 Lumen tactical weapon light with two switch configurations. The new TLR-7A includes customized ergonomic switches featuring a low or high position to match your shooting style. It features an ambidextrous on/off switch and a rail clamp that is designed to rapidly attach/detach from the side of compact and full frame weapons. Its low-profile design prevents snagging and a “safe off†feature prevents accidental activation, saving batteries. Features 500 lumens; 140m beam; runs 1.5 hours Custom optic produces a concentrated beam with optimum peripheral illumination Ambidextrous on/off switch TLR-7 side switch model cannot be retrofitted to the the TLR-7A rear switch models Uses one CR123A lithium battery (included) Safe off feature prevents accidental activation; saves batteries Rail grip clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle Securely fits a broad range of full-sized and compact guns Durable, anodized machined aluminum construction User enabled strobe function 2.58†(6.55 cm); 2.4 oz (68.1g) IPX7 waterproof to 1m for 30 minutes Limited lifetime warranty Package Contents: Streamlight TLR-7A Flex Tactical Weapon Light (1) CR123A lithium battery Rail locating keys for Universal or 1913 Picatinny style rails and mounting tools High and Low rear switch