Rock Island Armory M1911-A1 Rock Standard Optic 51399 Pistol .45 ACP 5" Barrel 8rd RMSc Optics-Ready Black, Series 70.

This Rock Island Armory M1911-A1 Rock Standard Optic (Model 51399) is a full-size, optics-ready 1911 pistol chambered in .45 ACP, designed for shooters who want classic engineering with modern sight options. It features a 5-inch button-rifled barrel, black Parkerized finish, and an 8-round capacity. The firearm is based on the proven Series 70 design and includes an RMSc-pattern optics cut on the slide for mounting compatible red dot sights, along with practical upgrades like ambidextrous safety, a skeletonized hammer, and a factory-tuned trigger.

• Optics-ready slide with RMSc-compatible mounting cut
• Series 70 design with ambidextrous safety and skeletonized hammer
• 8-round .45 ACP magazine capacity

Built for reliability and versatility, this pistol delivers classic 1911 performance and modern optics compatibility, making it well suited for range shooting and general use. Its combination of traditional craftsmanship and practical features caters to shooters seeking both heritage and contemporary function.