Tactical flashlight 400-lumen CREE R2 LED IRB bulb 180+ mins battery operating time Integral quick-detach, Max Strength Lever Lock Weaver/Picatinny mount Ambidextrous, finger-adjustable on/off switch Built-in bulb reflector (IRB) Tactical bezel Hard-anodized aluminum 5.7 oz (with batteries) 3.38 long 1-year limited warranty Includes one CR123A lithium battery, 2.5mm Allen wrench & manual * Ideal for firearms, air guns and airsoft guns that have a Weaver/Picatinny accessory rail. Lightweight and suited for any tactical situation. While Leapers states this is a pistol flashlight, you can attach this to submachine guns, machine guns, rifles and carbines with Weaver/Picatinny scope rails. The only inconvenience is that there's no remote pressure switch, so you'll have to reach forward a good bit to turn this on/off.* WARNING: Avoid direct eye exposure.* WARNING: Do not store this flashlight in a case or confined space where minimal heat dissipation may cause overheating and battery explosion. Always make sure the flashlight is turned off and cannot be accidentally turned on during storage or transportation.