http://www.vizeri.com/VZ230 Rail mounted flashlights mount to Picatinny-style rails. This flashlight is shown with a 30 millimeter offset design for optimum positioning. The light has a type-III hard-coat anodized finish. The flashlight has zoom ability to adjust the beam for the ideal width. An optional remote switch is readily available for mounting to a rail mount hand grip. The strobe feature can be used to stun attackers. 230 lumens, waterproof, super durable to hold up against the forces of shooting.