The ProMag Industries RUG09N offers unparalleled durability and reliability with its heat-treated magazine designed for seamless loading. Proudly made in the USA, this magazine is engineered to exceed performance standards. Crafted with precision, the magazine utilizes heat-treated chrome silicon wire, ensuring longevity and strength. Every assembly phase is meticulously checked for consistency, so you can trust you are using the highest quality product. Heat-Treated Chrome Silicon Wire Spring Manufactured & Assembled in the U.S.A. Easy Loading Rugged Construction Choose the ProMag Industries RUG09N for a reliable, high-quality magazine that comes with a lifetime guarantee.