S&W M&P 9 1.0 Sear Housing Block 9mm – Part# MP901E

Smith & Wesson M&P 9 1.0 Sear Housing Block – 9mm

Restore reliable fire control function on your M&P 9 with this factory-original sear housing block. The sear housing block is the serialized fire control chassis that houses the sear, trigger bar, and related components — it is the heart of the M&P striker-fired trigger system. A cracked, worn, or damaged sear housing block affects trigger reset, sear engagement, and overall firing reliability. This used OEM part is a direct factory replacement for the M&P 9 1.0 full-size chambered in 9mm.

• Part Number: MP901E
• SKU: MP901E
• Fits: Smith & Wesson M&P 9 1.0 (Full-Size)
• Caliber: 9mm
• Part Type: Sear Housing Block (Fire Control Housing)
• Generation: M&P 1.0
• Condition: Used (factory original)
• Installation: Professional gunsmith installation required – this is a critical fire control component

Factory Replacement Quality

Genuine Smith & Wesson factory part manufactured to the exact specifications and tolerances of the original — same dimensions, same sear engagement geometry, same reliable fire control performance. No aftermarket substitutes.

Important Note on Fit

The sear housing block is generation-specific. The M&P 1.0 sear housing block is not interchangeable with the M&P 2.0, which uses a revised fire control design. Verify your pistol's generation before ordering. If unsure, contact us with your serial number and we'll confirm compatibility.

Questions? Call or email us — we're happy to help you get the right part the first time.