Upgrade your 1911 Commander with our premium flat wire recoil spring, specifically designed to fit models with full-length, 1/4 inches diameter guide rods. This 14lb spring is an ideal choice for 9mm 1911s, offering optimal performance and reliability. Crafted by ISMI, a trusted contractor for the U. S. Government, these springs are engineered with cutting-edge technology and materials. Unlike traditional springs made from outdated music wire, ISMI springs utilize advanced silicone chrome, ensuring superior durability and performance. Each ISMI spring undergoes a meticulous process of heat treatment, shot peening and stress relief, resulting in unmatched consistency and longevity. These springs are not only built to withstand the demands of high cycling rates in machine guns but also benefit from the expertise gained through the development of springs for Indy car racing. Experience the precision and reliability that comes from a legacy of innovation and excellence with our ISMI flat wire recoil spring.

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