Heckler & Koch HK USC .45 ACP Semi-Auto Carbine, 16 inch Barrel, German-Made, Polymer Thumbhole Stock, 10+1
The HK USC is a German-made, semi-automatic .45 ACP carbine derived from the HK UMP. It features a 16 inch unthreaded steel barrel, a polymer receiver and stock unit, and an ambidextrous 2-position safety with HK pictograms. This example is in excellent condition and includes two factory 10-round magazines, an HK-branded soft case, and the original manual.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minimal evidence of prior use is present. The firearm presents as excellent overall, and the bore is bright with a reflective finish.
What’s Included
- 2x HK factory USC .45 ACP 10-round polymer magazines
- HK-branded soft rifle case
- Original manual
Built in Germany and imported by HK Inc., Columbus, GA, this USC carries clear provenance with CIP N nitro proof, DE country code, and "Heckler & Koch GmbH – Made in Germany" markings, along with factory codes CC/CP. Multiple components display matching serial numbers, underscoring factory originality.
The carbine operates via a simple blowback, closed-bolt system optimized for .45 ACP. Capacity is 10+1, and it feeds from HK USC polymer magazines. The configuration is semi-automatic only.
Its 16 inch steel barrel has a plain, unthreaded muzzle. The receiver and stock are polymer in a unified layout, paired with a polymer fore-end for consistent handling. Length of pull measures 14.5 inches.
Furniture includes a fixed, skeletonized thumbhole stock that provides a stable shoulder interface. Controls are intuitive, with an ambidextrous 2-position selector featuring HK pictograms. The rifle ships without sights installed, allowing the end user to configure sighting to preference.

