Rock Island Armory M1911-A1 GI Standard CS .45 ACP Compact with 3.5 in Barrel, Matte Dark Gray/Black, Fixed GI Sights
This Rock Island Armory M1911-A1 GI Standard CS is a compact, Officer-format .45 ACP 1911 with a 3.5 in button-rifled barrel and classic GI features. Built by Armscor with a cast 4140 steel frame and a forged 4140 steel slide, it wears a matte dark gray/black finish and fixed GI-style sights. Clear factory markings and an APINTL Pahrump NV Philippines import stamp are present. It comes with four magazines, including an extended 13-rounder and one stamped Chip McCormick Custom LLC.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: This pistol shows scattered cosmetic handling marks, scratches, blemishes, and areas of finish loss.
What’s Included
- Rock Island Armory M1911-A1 GI Standard CS pistol
- 3x 7-round single-stack .45 ACP magazines
- 1x 13-round extended magazine
- One magazine stamped "Chip McCormick Custom LLC"
- Wrap-around rubber finger-groove grip sleeve (installed)
The GI Standard CS configuration delivers a compact Officer-size profile with a short slide and 3.5 in barrel. Controls are classic 1911: single-action operation, a manual thumb safety, a grip safety, a short solid trigger, and a standard checkered magazine release. An arched A1 mainspring housing and a GI wide-spur hammer complete the traditional setup.
Construction features include a cast 4140 steel frame paired to a forged 4140 steel slide for durability. The barrel is button-rifled. The overall finish is matte dark gray/black on both frame and slide.
Sighting equipment is GI-style and fixed, with a small blade front and a small square-notch rear. The slide carries rear-only vertical serrations for traction. Factory roll marks include the Rock Island Armory crest and "ROCK ISLAND ARMORY" on the left slide, "M1911-A1" on the right frame, and "CAL .45 ACP" on the barrel hood. An APINTL–PAHRUMP NV PHILIPPINES import mark is present, and the pistol was manufactured in the Philippines by Armscor.
Grips are black checkered panels with double-diamond escutcheons, and this example has a wrap-around rubber finger-groove sleeve installed. It uses a single-stack detachable box magazine and is accompanied by three 7-round magazines plus one 13-round extended magazine; one magazine is stamped Chip McCormick Custom LLC.