Smith & Wesson Trigger Assembly - Models 639, 645, 649, 669 - Factory New (Part #103140000) adjustable sight A qualified gunsmith should install

A qualified gunsmith should install this part and verify proper cylinder timing and lockup to ensure safe operation

As part of complete pistol restoration

4") ✅ Yes M&P 40 M2

genuine OEM Smith & Wesson drawbar for the Model 5904 semi-automatic pistol

Smith & Wesson Trigger Assembly - Models 639, 645, 649, 669 - Factory New (Part #103140000) adjustable sight A qualified gunsmith should installFactory New Trigger Assembly for Multiple S&W Models This genuine Smith & Wesson factory new trigger assembly (Part #103140000) is compatible with multiple popular S&W pistol models including the 639, 645, 649, and 669. Whether you're performing a repair, restoration, or upgrade, this OEM component delivers the reliable performance and quality that Smith & Wesson is known for. Key Benefits Factory New Condition: Brand new Smith & Wesson OEM part never