Smith & Wesson J Frame Model 30 Stirrup Spring Swivel Old Style - Used
This listing is for a used Smith & Wesson J Frame Model 30 stirrup spring swivel — Old Style. Factory OEM part sold as-is.
The stirrup spring swivel is a critical component of the J Frame cylinder latch assembly, working with the stirrup and thumbpiece to allow the cylinder to swing out for loading and unloading. This is the Old Style version (part JB3006A) — distinct from the New Style (JB3006) — and is correct for earlier production Model 30 revolvers. An essential find for gunsmiths restoring vintage .32 S&W Long Hand Ejectors.
Part Details
- Part Number: JB3006A
- Condition: Used
- Part: Stirrup Spring Swivel — Old Style
- Fits: Smith & Wesson J Frame Model 30 (earlier production)
- Caliber: .32 S&W Long
- Frame: J Frame
- OEM: Smith & Wesson Factory Part
Old Style vs. New Style
| Part Number | Style | Fits |
|---|---|---|
| JB3006A | Old Style | Earlier production Model 30 |
| JB3006 | New Style | Later production Model 30 |
If you are unsure which style your revolver requires, contact us with your serial number and we can help identify the correct part.
Model Compatibility
| Model | Frame | Caliber | Compatible |
|---|---|---|---|
| Model 30 (early production) | J Frame | .32 S&W Long | ✅ Yes — Old Style |
| Model 30-1 | J Frame | .32 S&W Long | ⚠️ Verify — may require New Style |
| Model 31 | J Frame | .32 S&W Long | ⚠️ Verify fitment |
| Model 32 (Pre-Model) | J Frame | .32 S&W Long | ⚠️ Verify fitment |
| Model 36 / 60 | J Frame | .38 Special | ❌ No — different caliber/generation |
Note: The Model 30 is chambered in .32 S&W Long, a distinct cartridge from .38 Special. Always confirm your model, dash number, and production era before ordering. To find your model number, swing out the cylinder and check behind the yoke on the frame. Models without a number predate 1957–58 — contact us with your serial number for assistance.
Installation
Disassembly and reassembly by a qualified gunsmith is required. Some parts may require fitting. Factory replacement parts are manufactured to the same specifications, tolerances, and materials as the originals.
Questions? Shoot us an email or give us a call — we're here for all your S&W needs.