Smith & Wesson J Frame Multi-Model Internal Parts Kit Used .38 Special – Part J139A
Smith & 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 Pin Spring
- Firing Pin Retaining Pin
- Bolt Plunger & Spring
Model Compatibility
| Model | Frame | Caliber | Notes |
|---|---|---|---|
| Model 38-3 (Bodyguard Airweight) | J Frame | .38 Special | Shrouded hammer |
| Model 49-3 (Bodyguard) | J Frame | .38 Special | Shrouded hammer, steel frame |
| Model 60-9 | J Frame | .38 Special | Stainless |
| Model 317 AirLite | J Frame | .22 LR | Verify firing pin compatibility — rimfire model |
| Model 331TI | J Frame | .32 H&R Mag | Titanium AirLite |
| Model 337TI | J Frame | .38 Special | Titanium AirLite |
| Model 637-1 | J Frame | .38 Special | Stainless cylinder, alloy frame |
| Model 638-2 | J Frame | .38 Special | Bodyguard Airweight, stainless |
| Model 649-3 | J Frame | .38 Special | Bodyguard, stainless |
Note: Model 317 is a rimfire (.22 LR) model. Verify firing pin compatibility before installing in rimfire revolvers. Contact us if you need help confirming fitment for your specific model and dash number.
Identifying Your Model Number
Swing out the cylinder and check behind the yoke on the frame for a stamped model number. Model numbers began in 1957–58. If no model number is present, your revolver pre-dates 1957 — contact us with your serial number for assistance.
Specifications
- Manufacturer: Smith & Wesson
- Part Number: J139A
- Frame: J Frame
- Primary Caliber: .38 Special
- Condition: Used OEM
- Installation: Gunsmith installation strongly recommended
Questions about compatibility? Contact us at sales@usagunsandgear.com or call 770-544-8075. We’re your Smith & Wesson parts experts.