Complete M&P Sear Housing Block Assembly Kit
This comprehensive factory OEM assembly kit includes all the essential components needed for a complete sear housing block assembly for Smith & Wesson M&P pistols with manual safety in 9mm and .40 S&W calibers.
Kit Includes:
- Sear Housing Block Assembly (Part #423420000) - Complete housing with manual safety configuration
- Sear - 9mm/.40/.45 ACP - Precision-machined trigger control component
- Sear Pin - Retains sear in housing block
- Sear Spring - Provides proper sear tension and reset
- Sear Return Plunger - Ensures reliable sear return
- Sear Deactivation Lever - Manual safety mechanism component
- Sear Deactivation Pin - Secures deactivation lever
Features:
- 100% Factory OEM Smith & Wesson parts
- Complete assembly - all components included
- Precision-machined to exact S&W specifications
- New, never used condition
- Save time and money with complete kit
- Ensures proper fit and function
- Direct replacement for worn or damaged assemblies
Compatibility:
Fits Smith & Wesson M&P pistols with manual safety in 9mm and .40 S&W:
- M&P9 Full Size (Manual Safety)
- M&P9 Compact (Manual Safety)
- M&P40 Full Size (Manual Safety)
- M&P40 Compact (Manual Safety)
Note: This kit is specifically for manual safety equipped M&P 1.0 generation models.
Installation:
Professional gunsmith installation required. This assembly requires complete disassembly of the frame and trigger mechanism. Installation by a qualified, experienced gunsmith is strongly recommended to ensure proper fit, function, and safety.
All factory replacement parts are manufactured to exact specifications and tolerances using the same materials and processes as original equipment.
Why Choose a Complete Kit?
Purchasing all components together ensures compatibility, saves time sourcing individual parts, and provides peace of mind that you have everything needed for a successful repair or rebuild.