Achieve the fastest, softest-shooting cycle possible in your 1911 Commander with the ISMI 10 lb. flat wire recoil spring. This is a specialized, extra-light spring designed for competitive shooters who are meticulously tuning their pistol to run ultra-light "mouse puff" or "gamer" handloads. The flat wire design provides a smooth, linear compression feel and an exceptionally long service life.

The ISMI Advantage: Flat Wire Technology

ISMI's flat wire recoil springs offer a distinct performance advantage for competitive shooters seeking to minimize recoil and sight disruption.

• Smoother Recoil Impulse: The flat wire design compresses in a more linear fashion than traditional round wire, resulting in a smoother, less "snappy" recoil impulse that helps keep your sights on target.
• Exceptional Durability: Crafted from certified aerospace-spec chrome silicon alloy steel, these flat wire springs are rated for an incredible service life, resisting wear and taking a "set" far longer than any music wire spring.
• Made in the USA: Proudly manufactured in the United States by ISMI, the top choice for high-performance firearm springs in nearly every shooting discipline.

Application & Tuning Guide

A 10 lb. recoil spring is an extra-light, competition-focused spring. It is significantly lighter than the factory standard and is intended for highly specific applications:

• Competition Handloads: Specifically designed for shooters using very light target ammunition (e.g., 185gr or 200gr lead semi-wadcutters at low velocities) where a standard spring would be too strong for the slide to cycle reliably.
• Heavily Compensated Pistols: Ideal for "race guns" equipped with a compensator, which reduces the slide velocity and requires a lighter spring to function properly.
• Fastest Possible Cycling: For competitors in sports like USPSA or Steel Challenge, a 10 lb. spring allows for the fastest possible slide cycle time, enabling quicker follow-up shots.

Technical Specifications