Premium Wolff reduced power hammer spring (mainspring) for Smith & Wesson J-Frame revolvers. This 8 LB spring delivers a lighter, smoother double-action trigger pull while maintaining reliable primer ignition for consistent performance.
Key Features:
- 8 LB reduced power design for improved trigger feel
- Precision-manufactured by Wolff Gunsprings to exacting tolerances
- Maintains reliable ignition with reduced trigger weight
- Direct OEM replacement for custom performance tuning
Compatibility: Fits S&W J-Frame models including 31, 32, 34, 36, 37, 38, 42, 442, 49, 60, 63, 631, 632, 637, 638, 640, 642, 649, and 940.
Condition: New factory part