Experience reliability with the ProMag RUG-A1 20-Round Steel Magazine, engineered for optimal performance and durability. Crafted in the USA, this rugged magazine is designed to endure rigorous conditions while offering unmatched dependability. Each magazine undergoes extensive quality checks to ensure consistency and reliability. The precision-wound heat-treated chrome silicon wire spring enhances durability, providing smooth functionality for every load. 20 - Round Capacity Steel Construction Heat-Treated Chrome Silicon Wire Spring Manufactured & Assembled in the U.S.A. Easy Loading Rugged Construction Elevate your shooting experience with a magazine that comes with a lifetime guarantee.