Rock Island | Rock Ultra CS-L 1911 | .45 ACP | 3.6 | 51585

The Rock Island Armory Rock Ultra CS-L is a compact 1911-style pistol chambered in .45 ACP with a 3.60-inch button-rifled barrel and a full-length guide rod. It pairs an aluminum alloy frame with a serrated, parkerized steel slide and tactical G10 grips for a balance of reduced weight and rugged controls. Standard features include a dovetail fiber optic front sight, an adjustable rear sight, skeletonized hammer and trigger, and ambidextrous safety for conventional 1911 operation.

For a red-dot option under $1,000 that complements the slide geometry and sight radius of this pistol, consider a compact micro reflex such as the Vortex Venom (3 MOA) or a similarly sized micro red dot. Typical uses for this pistol include concealed carry where a compact 1911 profile is preferred and precision target work at the range.

Product Specifications

• The manufacturer is Armscor / Rock Island Armory.
• The model is the Rock Ultra CS-L.
• The manufacturer’s part number is 51585.
• The caliber is .45 ACP.
• The barrel measures 3.60 inches and is button-rifled.
• The action type is Single Action.
• The frame material is 7075 Aluminum with a beavertail.
• The frame finish is Black Anodized and the slide finish is Black Parkerized.
• The slide is described as serrated.
• The grips are Black/Gray G10 tactical grips.
• The sights include a dovetail fiber optic front and an adjustable rear (LPA MPS1 type).
• Included features are a full length guide rod, skeletonized hammer, and skeletonized trigger.
• The overall length is 7.13 inches.
• The series is Ultra CS-L.
• The UPC is 4806015515852.

This Rock Ultra CS-L offers a trimmed 1911 footprint with upgraded ergonomics and controls intended to deliver a familiar single-action trigger feel and modern sighting options right out of the box. Its combination of lightweight alloy framing, aggressive G10 grips, and a short-profile barrel make it well suited to shooters who want a compact 1911 for everyday carry use or focused range practice. The included adjustable sights and fiber optic front make sight acquisition straightforward, while the skeletonized controls reduce mass for a quick trigger reset.

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