Premium Colt 1911 Hammer Spring Mainspring - Adjustable Spring Weights

Wolff Gunsprings Colt 1911 Hammer Spring / Mainspring

Fine-tune your Colt 1911 with a Wolff Gunsprings hammer spring, also commonly referred to as a mainspring. Available in 15 lb., 16 lb., and 17 lb. spring weights, these premium replacement springs are designed for shooters, builders, and gunsmiths looking to maintain reliable 1911 hammer operation.

Wolff Gunsprings are precision manufactured for consistent spring rates and dependable service life. Whether replacing a worn factory spring, maintaining a 1911 pistol, or selecting a spring weight for a custom setup, this replacement hammer spring is a simple and effective option for Colt 1911 pistols and many compatible 1911-pattern firearms.

Available Options

• 15 lb. Hammer Spring
• 16 lb. Hammer Spring
• 17 lb. Hammer Spring

Features

• Premium replacement hammer spring / mainspring for Colt 1911 pistols
• Compatible with many 1911-pattern pistols and clones
• Available in 15 lb., 16 lb., and 17 lb. spring weights
• Helps maintain consistent hammer operation and primer ignition reliability
• Useful for maintenance, repair, custom builds, and tuning applications
• Precision wound for repeatable spring rates
• Manufactured from premium spring materials for long service life
• Trusted Wolff Gunsprings quality
• Made in the USA

Product Details

Installation Note

NDZ recommends that all firearm parts be installed by a qualified and trained gunsmith. Always follow proper firearm safety practices and use appropriate safety gear when working on any firearm.

Compliance Notes

This listing is for a replacement firearm accessory part only. No firearm, frame, receiver, ammunition, magazine, or regulated complete weapon is included. Buyer is responsible for knowing and following all applicable federal, state, and local laws. Domestic U.S. sales only. California buyers are responsible for confirming compliance with all applicable California laws and regulations.

Proposition 65 Warning for California Residents: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.