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40 S&W models: SW40V
or defensive applications
Used OEM Part
Proper installation is critical for safe and reliable function
Smith & Wesson M&P .40 S&W Locking Block Used – Part# MP4015E sd40ve 40 S&W models: SW40VSmith & Wesson M&P . 40 S&W Locking Block Used Part Number: MP4015E Condition: Used (Factory Original) Caliber: . 40 S&W Restore your M&P . 40 to factory correct function with this genuine Smith & Wesson replacement locking block. The locking block is a critical fire control component that locks the barrel into battery during firing proper fit and function are essential for safe and reliable operation. Part Number: MP4015E Fits: Smith & Wesson M&P .
