Ncstar's 200l led flashlight and green laser combo unit with quick release weaver/picatinny type mount.It mounts onto most accessory spec rails.It has an ambidextrous momentary or constant-on switch, a rear selector mode switch for laser only, flashlight only, or both.Includes two cr123a battery.Power Switch: Ambidextrous On/OffWavelength: 532 nmDot Size: 1mmPower: 5mWWeight: 4 ozBattery: CR123ALaser Color: GreenFirearm Fit: Any w/RailFinish: BlackMount Type: Picatinny/Weaver