Smith & Wesson K, L & N Frame Power Rib Mainspring New Part SWMS222
$31.99
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Smith & Wesson K, L & N Frame Power Rib Mainspring New Part SWMS222
$31.99
This listing is for the Smith & Wesson K, L & N Frame "Power Rib" Mainspring — factory new OEM part.
The mainspring (hammer spring) powers the hammer fall in your S&W double-action revolver, directly affecting trigger pull weight and ignition reliability. The "Power Rib" design provides consistent spring tension across the hammer's travel arc, delivering reliable primer strikes while maintaining a smooth, predictable double-action pull. A worn or broken mainspring can cause light primer strikes, misfires, or erratic trigger behavior.
Part Details
- Part Number: SWMS222
- Condition: Factory New
- OEM: Smith & Wesson
- Design: Power Rib
- Compatible Frames: K, L & N Frame
Model Compatibility
| Frame | Example Models | Compatible |
|---|---|---|
| K Frame | Model 10, 13, 14, 15, 17, 19, 64, 65, 66, 67, 617 | ✓ Yes |
| L Frame | Model 581, 586, 681, 686, 619, 620 | ✓ Yes |
| N Frame | Model 24, 25, 27, 28, 29, 57, 629, 627 | ✓ Yes |
| J Frame | Model 36, 60, 442, 642 | ✗ No |
| X Frame | Model 500, 460 | Verify before ordering |
If you are unsure whether this mainspring fits your specific model, please contact us before ordering.
Installation Note
Gunsmith Recommended: Mainspring replacement requires proper disassembly of the side plate and grip frame. Some fitting may be necessary. Factory replacement parts are manufactured to the same specifications and tolerances as the original parts.
We only ship to addresses within the United States.