FITS: Rifles, carbines, or submachine guns with a forend-mounted Picatinny rail.
Max Output / Runtime: White - 150.0 lumens / 1.8 hours Infrared (IR) - 120.0 mW / 8 hours Tactical Runtime*: 1.8 hours Bezel Diameter: 1.37 inches Weight w/Batteries: 9.20 ounces Batteries: (2) 123A *Total runtime until output drops below 50 lumens.