Rock Island M1911-A1 GI Standard .45 ACP 5″

The Rock Island Armory M1911-A1 GI Standard is a full-size, single-action semi-automatic pistol chambered in .45 ACP with a 5-inch barrel. It pairs a parkerized steel frame and slide with smooth wood grips and fixed GI-style sights to preserve the classic 1911 profile. The design includes a beavertail grip safety and a serrated slide for basic positive manipulation. Factory trigger pull is listed at approximately 4–6 pounds for a traditional feel out of the box.

Key Specifications

• The caliber is .45 ACP.
• The barrel measures 5 inches and is cut with 6 grooves.
• The action is Semi-Auto.
• The finish is Parkerized.
• The frame and slide are made from steel.
• The grips are smooth wood.
• The sights are fixed GI-style.
• The rate of twist is 1-in-16.
• The trigger pull is approximately 4–6 pounds.
• An included accessory listed in manufacturer data is a pistol case.

Built to a traditional 1911 specification, the GI Standard offers a straightforward platform suited to range use, historical-style shooting, or customization. Its parkerized finish and classic controls appeal to shooters who prefer time-tested ergonomics and serviceable construction.