The Rock Island Armory Rock Ultra FS is a semi-automatic .45 ACP pistol built on a steel frame with a 5-inch button-rifled barrel. Its black parkerized finish, G10 grips, fiber-optic front sight, and adjustable rear sight provide a practical configuration for range use and responsible lawful ownership.

The pistol features a traditional 70-series-style design with a full-length guide rod, extended beavertail grip safety, ambidextrous thumb safety, and serrated slide. The skeletonized hammer and trigger complete a feature-focused configuration for shooters who value established 1911 controls and straightforward specifications.

Key Specifications

• The chambering is .45 ACP for compatibility with commonly available .45 ACP ammunition.
• The barrel measures 5 inches and uses a button-rifled design.
• The operating system is a semi-automatic, single-action configuration.
• The frame is made from steel with a black parkerized finish.
• The pistol uses G10 grips for a durable, textured gripping surface.
• The sight combination includes a fiber-optic front sight and an LPA-style adjustable rear sight.
• The pistol includes an ambidextrous safety and a beavertail grip safety.
• The slide features serrations for practical manipulation.
• The barrel is supported by a full-length guide rod.
• The listed weight is 40 ounces.

With its steel construction, traditional controls, adjustable rear sight, and durable parkerized finish, the Rock Ultra FS presents a focused 1911 platform for regular range sessions and informed collectors. Its combination of established design elements and practical upgrades makes it a well-defined choice for shooters seeking a full-size .45 ACP pistol.

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