Safariland RLS Weapon Light, RLSM-2 Mount and LED Flashlight, AAA, Kit (Single Pack) Super-bright LED technology (90 lumens)  bright enough to be your primary light; Prism Reflector System penetrates light up to 350 feet 3 AAAs provide over 50 hours useno expensive proprietary batteries needed Fits most handgun models that incorporate an integral rail systemalso mounts to rifles and shotguns that have a picatinny rail RLS mount will accommodate any hand-held compact light in the range of .970" (24.6mm) - 1.060" (26.9mm) in diameter Ambidextrous