Smith & Wesson K-Frame Cylinder Stop MPC11 - M&P 1st Model 4-Screw .38 Colt - Factory OEM Part Model 438 This essential control component allows

This essential control component allows for smooth and reliable operation of the pistol's release mechanism

Stirrup Spring & Swivel

The hammerless (internal hammer) design prevents snagging during draw from concealment

A rare find for collectors and shooters restoring these classic small-frame revolvers

Model: New Century (Triple Lock)

Smith & Wesson K-Frame Cylinder Stop MPC11 - M&P 1st Model 4-Screw .38 Colt - Factory OEM Part Model 438 This essential control component allowsAuthentic Smith & Wesson K Frame Cylinder Stop MPC11 Factory OEM part for Smith & Wesson Military & Police 1st Model revolvers. This cylinder stop (part number MPC11) is an essential timing component that ensures proper cylinder lockup and safe operation of your vintage K frame revolver. Compatibility & Fitment Confirmed Compatible With: Smith & Wesson K Frame Military & Police 1st Model (4 screw frame) . 38 Colt caliber chambering Serial number