Smith & Wesson J Frame Model 42 Centennial Airweight Bolt for Flat Latch Thumb Piece - Part #J4245 internal pins Part# 4138A Smith & Wesson

Part# 4138A Smith & Wesson Pistol Model 41

The mainspring tension directly affects your revolver's trigger pull

zero the sight for your specific load and shooting distance

500 S&W Magnum and

Always verify part compatibility with your specific magazine model before ordering

Smith & Wesson J Frame Model 42 Centennial Airweight Bolt for Flat Latch Thumb Piece - Part #J4245 internal pins Part# 4138A Smith & WessonSmith & Wesson J Frame Model 42 Centennial Airweight Bolt for Flat Latch Thumb Piece Keep your Model 42 cycling smoothly with this original Smith & Wesson bolt (cylinder stop) designed specifically for the flat latch thumb piece configuration. This is the part that locks the cylinder in place during firing a critical component for reliable revolver function. Whether you're restoring a classic Centennial Airweight or replacing a worn part, this is the