Featuring dual-wall feed rails, the CMC® Products RPM Full-Size 1911 .45 ACP 8-Round Black Oxide Magazine delivers ultra-smooth feeding performance in virtually any environment. The all-steel follower and steel rocket wire spring eliminate binding for enhanced reliability, while laser-welded stainless steel construction delivers exceptional corrosion resistance and long-lasting durability in less-than-desirable environments. Numbered witness holes allow for quick, visual round counts, and the removable floor plate offers quick disassembly for cleaning and maintenance.