Smith & Wesson K Frame Model 15-3 Thumb Piece & Nut Blue .38 Special K155B M&P Shield 45 M2.0 41 Magnum | Part #57129

41 Magnum | Part #57129

Part Number: 10129AB

3rd Generation S&W compact pistol platform

3913 LS/NL

Mainspring Type: Type-2 Reduced Power

Smith & Wesson K Frame Model 15-3 Thumb Piece & Nut Blue .38 Special K155B M&P Shield 45 M2.0 41 Magnum | Part #57129OEM Smith & Wesson Thumb Piece & Nut for Model 15 3 Cylinder release thumb piece with nut for K Frame Model 15 3 Combat Masterpiece . 38 Special revolvers. Blue steel finish with old style design ensures reliable cylinder operation and proper fit. Specifications: Fits: K Frame Model 15 3 . 38 Special Material: Blue steel Condition: Used, fully functional Includes: Thumb piece and nut Style: Old style Part Number: K155B Genuine Smith & Wesson factory