Surefire Off-Set Rail Mount Replacement, Fits M300 Or M600 Scout, Black RM45-BK The SureFire RM45 offset mount" designed specifically for Scout Light models equipped with a thumbscrew clamp" positions the light in the offset position between the rails of a MIL-STD-1913 (Picatinny) forend" decreasing overall weapon profile and limiting potential snag factor. The robust RM45 is constructed of lightweight but strong aerospace aluminum that's hard anodized with a Mil-Spec Type III finish-so it's extremely durable and resists corrosion while adding very little weight to your weapon. Make your already low-profile Scout Light even more streamlined by using this innovative" one-of-kind mount. Fits: M300" M300V" M600U" M600V" M600P" M600AA