iProtec RMLSR Rail-Mount Firearm Laser - Red - The RMLSR uses a 5-milliwatt, 650 nanometer laser to sight up to 412 meters away. The laser is controlled by the standard cap for use with a hand gun, or by the pressure switch for use with a long gun. FEATURES: Pressure switch uses momentary operation for use with a long gun; Standard end cap switches toggles laser on and off for use with a hand gun; 1 x CR1/3N battery included; Anodized aircraft-grade aluminum; water and impact-resistant; Anti-recoil locking; Adjustable hinge mount design; no tools required; For rail-equipped subcompacts, pistols and long guns; Patented accessory rail-mount (18mm x 24mm);