Wolff Hammer Spring Pak for S&W Pistols
Part Number: 26581
Premium Wolff reduced power hammer spring pak designed for Smith & Wesson centerfire pistols. This precision-engineered 3-spring pak allows you to fine-tune your pistol's hammer performance by testing 16, 17, and 18 LB springs to find the perfect balance of reliable ignition and smooth trigger pull for your specific pistol and ammunition.
Compatible Models:
This hammer spring pak fits Smith & Wesson pistols in the following calibers and models:
- 9mm - Models 39*, 439, 539, 639, 3904, 3906, 3944, 3946, 59*, 459, 559, 659, 5903, 5904, 5906, 5923, 5924, 5926, 5943, 5944, 5946, 5967, 909, 910, 915
- .45 ACP - Models 645, 745, 4506, 4526, 4536**, 4546, 4566, 4567, 4576, 4586, 4596
- 10mm - Models 1006, 1026, 1066**, 1076, 1086
- .40 S&W - Models 410, 411, 4003, 4004, 4006, 4026, 4043, 4044, 4046***
*Early 39/59 pistols had a 22 LB factory spring
**Some pistols may have short hammer springs
***Some 4046's have a 16 LB factory hammer spring
Key Features:
- 3-Spring Pak: Includes 16, 17, and 18 LB reduced power springs
- Tune to Your Needs: Test each spring to find optimal performance for your pistol and ammo
- Reduced Power: Lighter hammer fall for smoother trigger pull
- Wide Compatibility: Fits most S&W 3rd gen autos in 9mm, 10mm, .40, and .45
- Premium Quality: Made in USA by Wolff GunspringMakers with over 75 years of expertise
- Competition Ready: Popular choice for IDPA, USPSA, and action shooting
- Reliable Ignition: Engineered to maintain positive primer strikes
Technical Specifications:
- Spring Type: Hammer Spring
- Spring Weights: 16 LB, 17 LB, 18 LB (Reduced Power)
- Compatible Calibers: 9mm, 10mm, .40 S&W, .45 ACP
- Material: Premium spring steel
- Finish: Corrosion-resistant
- Manufacturer: Wolff GunspringMakers (USA)
- Condition: New
- Weight: 1.5 oz
- Package: 3 springs per pak (1 each: 16 LB, 17 LB, 18 LB)
Installation:
Installation requires disassembly of your S&W pistol to access the hammer spring. If you're not comfortable performing this installation, have a qualified gunsmith install the spring. Always function test with your carry ammunition after installation to ensure reliable primer ignition.
Why Choose Wolff Springs?
Since 1948, Wolff has been America's premier manufacturer of precision firearm springs. Their hammer springs are engineered to exacting tolerances, providing smooth, reliable performance for competition, carry, and range use. The 3-spring pak allows you to customize your pistol's performance to match your specific needs.
Frequently Asked Questions:
Q: Which spring weight should I use?
A: Start with the 18 LB spring and test fire with your carry ammunition. If ignition is reliable, you can try the lighter springs for an even smoother trigger pull. Always verify reliable ignition with your specific ammunition.
Q: Will this affect reliability?
A: When properly selected and tested, reduced power hammer springs maintain reliable ignition while improving trigger feel. Always function test thoroughly.
Q: Is this suitable for carry use?
A: Yes, when properly tested with your carry ammunition to ensure reliable primer strikes. Many shooters prefer reduced power springs for both carry and competition.
Warranty & Returns:
Wolff springs are backed by the manufacturer's quality guarantee against defects in materials and workmanship. All products are eligible for return within our standard return policy period if unused and in original condition.
Package Contents: 3 Wolff Hammer Springs (16 LB, 17 LB, 18 LB)
Pro Tip: Having multiple spring weights allows you to fine-tune your pistol's performance and have spares on hand for maintenance.