Rock Island Armory Rock Ultra FS 1911 Pistol, .45 ACP, 5-Inch Barrel

The Rock Island Armory Rock Ultra FS 1911 pistol in .45 ACP with a 5-inch barrel and black parkerized finish (brand part no. 51486) is the best-optioned line in Armscor’s 1911 lineup, built on the traditional 70 Series design with meaningful upgrades. Rock Island Armory machines the frame from 4140 ordnance steel on CNC equipment and hand-fits each pistol to strict tolerances, and the button-rifled barrel rides a full-length guide rod for consistent accuracy. A low-profile adjustable rear sight pairs with a high-visibility fiber optic front sight, and the skeletonized hammer and trigger include an adjustable over-travel stop and ambidextrous safety, all wrapped in battle-ready G10 tactical grips. Among 1911-pattern semi-auto handguns, this Rock Ultra FS configuration favors shooters who want a full-featured .45 ACP 1911 at a strong value.

Key Specifications

• Chambered in .45 ACP.
• Capacity of 8+1 rounds.
• The barrel measures 5 inches, button-rifled and supported by a full-length guide rod.
• The frame is machined from 4140 ordnance steel with a parkerized finish.
• The sights are a fiber optic front and adjustable rear.
• The safety is ambidextrous, and the hammer and trigger are skeletonized.
• The grips are G10 tactical, built for durability.
• The sights are Fiber Optic Front/Adj Rear.
• The sight type is Fiber Optic Front/Adj Rear.

Frequently Asked Questions

What is the trigger pull weight on this 1911? A crisp, factory 4- to 6-pound trigger, tuned out of the box.

Is the safety ambidextrous? Yes, an ambidextrous safety is included for right- or left-handed shooters.

Buy the Rock Island Rock Ultra FS 1911, .45 ACP

A full-featured, hand-fitted 1911 with fiber optic sights and G10 grips is exactly what this Rock Ultra FS delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.