Made from the highest quality American milled stainless and high carbon steel, the Check-Mate 1911 .45 ACP 8-Round Hybrid Magazine with Extended Removable Base is an ultrareliable 1911 magazine, specifically designed for tactical and competition pistol applications. Each magazine is hardened and finished with proprietary welds for exceptional strength and durability, while 360° polishing eliminates friction and drag for lightning-fast operation. Better yet, these magazines feature high-performance steel wire springs and proprietary followers for improved reliability, while the hybrid feed lips deliver a snug fit and reliable feeding and function with every round. Plus, the extended base plate delivers improved comfort and control with larger hands, while simultaneously protecting the magazine tube and spring from unintentional damages due to drops, bumps, and more.