Rock Island Armory 57180 GI 10mm 5" 9-Round 1911 Pistol

The Rock Island Armory 57180 GI 10mm 5" 9-Round 1911 Pistol represents a purpose-built platform for shooters and professionals who demand the stopping power of 10mm in a proven 1911 frame. Manufactured by Armscor, this full-size tactical pistol combines the ergonomic familiarity of the 1911 design with the ballistic superiority of 10mm auto—a cartridge favored by law enforcement agencies and civilian operators for its superior penetration and energy transfer. Whether for duty carry, home defense, or high-performance sport shooting, this GI-specification variant delivers reliability in a no-frills, combat-ready package.

Built to GI (Government Issue) specifications, this 10mm pistol features a 5-inch barrel—the standard length for full-size 1911s—which optimizes the velocity potential of 10mm ammunition while maintaining excellent handling characteristics. The 9-round capacity represents a practical balance between firepower and magazine-fed reliability in a single-stack platform. At 4.38 lbs, the pistol delivers manageable recoil impulse without sacrificing the mass necessary for controlled follow-up shots in high-stress scenarios. The traditional 1911 architecture—including single-action trigger geometry, thumb safety, and grip safety—remains unchanged, ensuring that operators with existing 1911 muscle memory transition seamlessly to this caliber upgrade.

This Armscor 1911 suits law enforcement professionals, armed security personnel, and civilian shooters seeking a hard-hitting duty or carry pistol without excessive cost or complexity. The 10mm cartridge excels in barrier penetration and performance against larger threats, making this platform particularly relevant for outdoor professionals and regions with wildlife concerns. Standard 1911 holsters, grips, and aftermarket accessories designed for .45 ACP frames are largely compatible with this pistol, providing shooters with an extensive ecosystem of customization options. Maintenance follows conventional 1911 protocols, and the proven design ensures parts availability and gunsmith support across the United States.