Smith & Wesson J Frame Multi-Model Internal Parts Kit Used .38 Special – Part J139A K1905U Not compatible with square butt

Not compatible with square butt configurations

Smith & Wesson Model 39 (9mm)

Trigger Assembly

K Frame revolvers were the standard police sidearm for decades and remain popular for home defense

Smith & Wesson J Frame Multi-Model Internal Parts Kit Used .38 Special – Part J139A K1905U Not compatible with square buttSmith & 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