HK USC .45 ACP Semi-Automatic Carbine | German-Made, Limited Import, Accessory-Ready
The Heckler & Koch USC combines the proven heritage of the UMP submachine-gun family with a civilian-legal, semi-automatic platform. German manufacture, limited U.S. availability, and matching serial numbers make this .45 ACP carbine attractive to shooters and collectors alike. Its lightweight polymer construction, cold-hammer-forged polygonal barrel, and generous rail space deliver a modern, durable rifle that is ready for customization.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: Exterior surfaces display a few minor, purely cosmetic scratches and blemishes. The bore is bright and shiny throughout.
What’s Included
- One HK gray polymer 20-round magazine
- Two HK gray polymer 10-round magazines
- HK USC Operator’s Manual
- Original HK hard case
This USC is built on a fiber-reinforced polymer receiver and stock, keeping overall weight down while maintaining HK’s reputation for toughness. The thumb-hole, skeletonized compliance stock integrates sling attachment points and provides a 14.5-inch length of pull for comfortable shoulder welds.
A 16-inch cold-hammer-forged barrel with polygonal rifling promotes long service life and reliable accuracy with standard .45 ACP loads. The barrel is unthreaded, preserving the carbine’s original import configuration.
The simple blowback, closed-bolt action is engineered for consistent cycling and reduced maintenance. Matched CIP N and HK DE proof marks confirm German proof-house certification and authenticity.
Outfitted with an 18-slot Picatinny top rail and a tri-rail polymer forend, the rifle is ready for optics, lights, and other accessories right out of the box. The included 20-round magazine takes full advantage of the carbine’s 20+1 capacity, while the two 10-round magazines provide compliance options where needed.