Smith & Wesson M&P Sear Housing Block Assembly - Manual Safety Models
Factory Smith & Wesson sear housing block assembly for M&P pistols equipped with manual safety. This genuine OEM fire control component houses the sear and related parts, ensuring safe and reliable trigger function. Precision-manufactured to exact specifications.
Key Features:
- Factory OEM part #423420000
- Complete sear housing block assembly
- Specifically for manual safety equipped models
- Precision-manufactured steel construction
- Factory specifications for proper trigger function and safety
- New, never used condition
Compatibility:
Fits Smith & Wesson M&P pistols with manual safety in 9mm and .40 S&W:
- M&P 9 Full Size 1.0 (with manual safety)
- M&P 9 Compact 1.0 (with manual safety)
- M&P 40 Full Size 1.0 (with manual safety)
- M&P 40 Compact 1.0 (with manual safety)
Installation Note:
This is a critical fire control component that requires proper installation and fitting by a qualified gunsmith. Improper installation can affect trigger function and firearm safety. Professional installation is strongly recommended.
Why Choose Factory Parts:
Genuine Smith & Wesson sear housing block assemblies are manufactured to exact specifications with proper hardness and geometry. Factory OEM parts ensure reliable trigger function, proper engagement with the sear, and safe operation of your firearm.
Perfect for: Replacement of damaged assemblies, custom builds, or gunsmith inventory for manual safety equipped M&P pistols.