Smith & Wesson J Frame Model 33 Regulation Police 4" Barrel Used .38 S&W – Part J3301
Smith & Wesson J Frame Model 33 Regulation Police 4" Barrel – Used
Part# J3301 | Used OEM Factory Part | .38 S&W
Original Smith & Wesson factory 4" barrel for the J Frame Model 33 Regulation Police revolver, chambered in .38 S&W (.38 Smith & Wesson). Sourced from used OEM stock — a correct replacement barrel for this classic J Frame model. Barrel fitting and cylinder gap timing must be verified by a qualified gunsmith after installation.
Key Details
- OEM Factory Part: Genuine Smith & Wesson — not aftermarket
- Barrel Length: 4 inches
- Caliber: .38 S&W (.38 Smith & Wesson / .38 Colt New Police)
- Condition: Used — inspected, functional
- Installation: Gunsmith installation required — barrel fitting and cylinder gap timing verification necessary
Model Compatibility
| Model | Frame | Caliber | Barrel | Notes |
|---|---|---|---|---|
| Model 33 (Regulation Police) | J Frame | .38 S&W | 4" | Primary fit — all dash variants |
| Model 33-1 | J Frame | .38 S&W | 4" | Verify dash variant fitment |
Important: The Model 33 is chambered in .38 S&W (.38 Smith & Wesson), which is a distinct cartridge from .38 Special. These cartridges are not interchangeable. Confirm your revolver’s chambering before ordering. Contact us with your model and serial number if you need help confirming fitment.
Specifications
- Manufacturer: Smith & Wesson
- Part Number: J3301
- Frame: J Frame
- Barrel Length: 4"
- Caliber: .38 S&W
- Condition: Used OEM
Questions about compatibility? Contact us at sales@usagunsandgear.com or call 770-544-8075. We’re your Smith & Wesson parts experts.