Smith & Wesson M&P .40 Compact Trigger Bar Assembly & Spring Used – Part# MP4019A1

Smith & Wesson M&P .40 Compact Trigger Bar Assembly & Spring – Used

Part Number: MP4019A1  |  Condition: Used (Factory Original)  |  Caliber: .40 S&W

Restore your M&P .40 Compact to factory-correct function with this genuine Smith & Wesson trigger bar assembly and spring. The trigger bar is a critical fire control component that transfers trigger pull to the sear, initiating the firing sequence. This listing includes both the trigger bar and the associated spring as a complete assembly.

• Part Number: MP4019A1
• Fits: Smith & Wesson M&P .40 Compact (40c)
• Caliber: .40 S&W
• Includes: Trigger bar assembly and spring
• Condition: Used – factory original S&W part
• Installation: Gunsmith fitting required; fire control components are safety-critical

Compatibility Note

This trigger bar assembly is specific to the M&P .40 Compact. It is not interchangeable with the full-size M&P .40 (MP4019), 9mm, or .45 ACP variants. 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.

Professional gunsmith installation required. Fire control components are safety-critical and must be properly fitted and tested before use.