Smith & Wesson K Frame M&P 1st Model Thumb Piece & Nut - MPC10 | .38 Colt | Serial #3312 M&P9 Barrel Keep your Model 659 running

Keep your Model 659 running reliably with this genuine Smith & Wesson lever pin

Improper installation can cause trigger malfunctions or failure to reset

Versatile Applications: Perfect for bluing prep

Restoration Authenticity: Aftermarket parts compromise collector value

38 Special +P J Frame 1 7/8" ✅ Yes Other J Frame models Various J Frame Other lengths ⚠️ Verify sight height & barrel Note: Sight height (

Smith & Wesson K Frame M&P 1st Model Thumb Piece & Nut - MPC10 | .38 Colt | Serial #3312 M&P9 Barrel Keep your Model 659 runningAuthentic Smith & Wesson K Frame Thumb Piece & Nut Part Number: MPC10 Condition: Used OEM Finish: Blue Steel Compatibility Scope This factory original thumb piece and nut assembly is specifically engineered for: Model: Smith & Wesson K Frame Military & Police 1st Model Serial Range: Fits Serial #3312 and similar 1st generation K frames Configuration: 4 screw sideplate design Caliber: . 38 Colt cartridge chambering Frame Size: K Frame (medium frame