Evolution Gun Works Picatinny Scope Mount S/W Revolver Satin Black. The EGW SW Revolver Scope Mount fits the factory drilled S&W bolt pattern. Evolution Gun Works manufactures this pistol scope base in black and silver finishes. This Evolution Gun Works scope mount is part of the Rifle Scope Mounts Rings and Bases product family offered by our online store. Specifications for Evolution Gun Works Picatinny Scope Mount S/W Revolver: Fits Guns: Smith and Wesson K-Frame revolver Smith and Wesson L-Frame revolver Smith and Wesson M-Frame revolver Features of Evolution Gun Works Picatinny Scope Mount S/W Revolver: Black finish (49100) or Silver finish (49104) Package Contents: Evolution Gun Works Picatinny Scope Mount S/W Revolver Package Contents of EGW Smith Wesson Pistol Scope Mount K L and M Frames: EGW Smith & Wesson Revolver Mount K L and M Frames Custom mounting screws EGW S/W Revolver Scope Mount Satin Black 49100