The Rock Island Armory Rock Ultra MS is a midsize 1911-pattern pistol built on the Rock series platform and chambered in .45 ACP. It features a 4.25-inch button-rifled barrel and a full-length guide rod. The pistol is finished in a black parkerized coating and ships with black/gray G10 tactical grips and adjustable rear sight plus a fiber-optic front sight. Standard 1911 upgrades on this model include a skeletonized hammer and trigger, an adjustable over-travel stop, and an ambidextrous safety.
Key Specifications
- The pistol is chambered in .45 ACP.
- The barrel measures 4.25 inches and is button rifled.
- The finish is black parkerized over a steel frame.
- The grips are G10 black/gray tactical panels.
- Sights are a fiber-optic front and an adjustable dovetail rear.
- The design includes a full-length guide rod.
- The pistol ships with skeletonized hammer and trigger.
- Safety features include an ambidextrous safety and an extended beavertail grip safety.
- The factory trigger is specified as 4–6 pounds pull.
- Packaging includes one magazine and standard Rock Series accessories.
The Rock Ultra MS brings traditional 70-series 1911 construction together with practical upgrades for range use, duty-type applications, and those who favor a midsize 1911 profile. Its combination of a button-rifled 4.25-inch barrel, adjustable sights and G10 grips provides a balanced platform for accurate, repeatable performance. Built on steel components with a durable parkerized finish and modern controls, this pistol is specified for shooters who want a well-equipped 1911 with straightforward, usable features.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
