Smith & Wesson J Frame Multi-Model Internal Parts Kit Used .38 Special – Part J139A Co Witness 357 Magnum loads better than

357 Magnum loads better than the K Frame

✓ Direct replacement for worn or damaged hammer assemblies

K Frame cylinders are frame-specific and not interchangeable with other frame sizes (J

Part Number: 91003A

Model Caliber Series 4505

Smith & Wesson J Frame Multi-Model Internal Parts Kit Used .38 Special – Part J139A Co Witness 357 Magnum loads better thanSmith & Wesson J Frame Multi Model Internal Parts Kit Used Part# J139A Used OEM Factory Parts . 38 Special J Frame A used OEM Smith & Wesson internal parts kit for multiple J Frame revolver models. This kit covers the core fire control and action components an efficient way to source several internal parts at once for a J Frame rebuild or repair. Kit Contents Rebound Slide & Spring Hammer Block Stirrup Assembly Cylinder Stop & Spring Firing Pin Firing