Smith & Wesson M&P .40 S&W Locking Block & Pin Used – Part# MP402D K19U Compatible with:

Compatible with:

ensuring a proper fit and reliable function

20B North American Arms Mini Revolver Barrel 1 9/16" Used Part

polymer follower

Smith & Wesson M&P .40 S&W Locking Block & Pin Used – Part# MP402D K19U Compatible with:Smith & Wesson M&P . 40 S&W Locking Block & Pin Used Part Number: MP402D Condition: Used (Factory Original) Caliber: . 40 S&W Restore your M&P . 40 to factory correct function with this genuine Smith & Wesson locking block and pin. 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. This listing includes the locking block and pin as an