Smith & Wesson M&P .40 S&W Slide Stop Assembly Used – Part# MP4027E

Smith & Wesson M&P .40 S&W Slide Stop Assembly – Used

Part Number: MP4027E  |  Condition: Used (Factory Original)  |  Caliber: .40 S&W

Restore your M&P .40 to factory-correct function with this genuine Smith & Wesson slide stop assembly. The slide stop locks the slide open after the last round is fired and allows the slide to be released when a fresh magazine is inserted — a worn or damaged slide stop can cause failure to lock back or difficulty releasing the slide.

• Part Number: MP4027E
• Fits: Smith & Wesson M&P .40 S&W (full-size)
• Caliber: .40 S&W
• Condition: Used – factory original S&W part
• Installation: Basic disassembly required; gunsmith recommended

Compatibility Note

This slide stop assembly is specific to the full-size M&P .40 S&W. It is not interchangeable with the M&P .40 Compact variants (MP4027A/MP4027B). If you are unsure of compatibility, contact us with your model and serial number.

Factory Replacement Quality

Genuine Smith & Wesson factory parts are manufactured to the exact specifications and tolerances of the originals — same materials, same dimensions, same reliable function.

Gunsmith assistance recommended if unfamiliar with pistol disassembly.