The Armscor / Rock Island Armory M1911-A1 GI Standard CS is a compact, traditional 1911-style pistol chambered in .45 ACP. It pairs classic GI-style controls with a parkerized steel frame and slide for a durable, low-reflectance finish. Fixed low-profile sights and smooth wood grips maintain the original service-issue profile while offering straightforward handling.
Key Specifications
- Caliber is .45 ACP.
- Action type is Semi-Auto.
- Finish is black parkerized on frame and slide.
- Frame material is steel.
- Slide is a serrated steel slide for positive manual operation.
- Controls include smooth wood grips that follow the GI profile.
- Sights are fixed G.I.-style sights with a blade front and fixed rear.
- Unloaded weight is 2.16 lbs (37.76 oz).
- Factory trigger pull is approximately 4–6 lbs.
- Includes 1 magazine as supplied.
This compact 1911 preserves the straightforward ergonomics and controls that made the pattern enduringly popular. Its parkerized steel construction and traditional appointments make it suited to users who want a no-nonsense, service-style M1911 in .45 ACP for everyday carry, range use, or duty applications. The simple controls and proven form factor make maintenance and use intuitive for experienced shooters.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.




