Smith & Wesson Center Pin J Frame X Frame Models 340 340PD 360 360PD 500 - 229420000 k18u This rebound slide assembly is

This rebound slide assembly is specifically designed for Smith & Wesson J Frame Model 637 Airweight revolvers chambered in

22 LR revolvers

640 Magnum

The rebound slide controls trigger reset and return

Smith & Wesson Center Pin J Frame X Frame Models 340 340PD 360 360PD 500 - 229420000 k18u This rebound slide assembly isSmith & Wesson J Frame and X Frame Cylinder Center Pin Part #229420000 Factory new OEM cylinder center pin designed for specific J Frame and X Frame models. Critical component that secures the cylinder to the crane assembly, ensuring proper alignment and smooth swing out operation. Compatible J Frame Models: Model 340 (. 357 Magnum) Airlite Centennial, scandium alloy Model 340PD (. 357 Magnum) Airlite Centennial PD, scandium alloy Model 360 (. 357