Smith & Wesson M&P .45 ACP Locking Block Used – Part# MP4502A j431n Compatibility: Smith & Wesson K

Compatibility: Smith & Wesson K Frame Model 10 (

Part Number: 3009071

Smith & Wesson Model 21 -

They can also become worn or weakened over time

your revolver may be pre-1957

Smith & Wesson M&P .45 ACP Locking Block Used – Part# MP4502A j431n Compatibility: Smith & Wesson KSmith & Wesson M&P . 45 ACP Locking Block Used Part Number: MP4502A Condition: Used (Factory Original) Caliber: . 45 ACP Restore your M&P . 45 to factory correct function with this genuine Smith & Wesson locking block. The locking block is a critical component that locks the barrel into battery during firing proper fit and function are essential for safe and reliable operation. Part Number: MP4502A Fits: Smith & Wesson M&P . 45 ACP Caliber: . 45 ACP