Smith & Wesson Mainspring
Factory original mainspring (hammer spring) for Smith & Wesson double action revolvers.
- Part Number: 050470000
- Compatibility: K, L, N, X Frame all models
- Condition: Factory new OEM part
- Function: Powers hammer operation
- Material: Spring steel
The mainspring is critical for reliable ignition and consistent trigger pull. This factory spring ensures proper hammer energy for reliable primer strikes while maintaining smooth double action operation. Replace worn or weakened springs to restore optimal performance.