Wolff Hammer Spring for S&W Pistols - 2-Pack
Part Number: 27616
Premium Wolff 16 LB reduced power hammer spring designed for Smith & Wesson centerfire pistols. This precision-engineered spring provides lighter hammer fall for a smoother trigger pull while maintaining reliable primer ignition. Includes 2 springs per package for backup or multiple pistols.
Compatible Models:
This hammer spring 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
Important Note:
Smith & Wesson pistols use 2 different hammer springs (Long - Group A & Short - Group B) for most centerfire semi-automatic pistols. This is the Long (Group A) hammer spring.
Key Features:
- 16 LB Reduced Power: Lighter hammer fall for smoother trigger pull
- 2-Pack Value: Includes 2 springs for backup or multiple pistols
- 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
- Long Spring Type: Group A configuration for listed models
Technical Specifications:
- Spring Type: Hammer Spring (Long - Group A)
- Spring Weight: 16 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 Old Stock
- Weight: 0.5 oz
- Package: 2 springs per pack
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 16 LB reduced power spring delivers improved trigger feel while maintaining reliable ignition.
Frequently Asked Questions:
Q: Will this affect reliability?
A: When properly tested with your carry ammunition, the 16 LB spring maintains 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.
Q: How do I know if I need the long or short spring?
A: Most S&W 3rd gen pistols use the long spring (Group A). Check your current spring or consult a gunsmith if unsure.
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: 2 Wolff Hammer Springs (16 LB each)
Pro Tip: Having a spare spring on hand is always a good idea for maintenance or to outfit multiple pistols.