HK USC .45 ACP Semi-Auto Carbine, German-Made (AG 2006), HERA Stock Conversion, HDPS Rail, Faux SD UMP Shroud, Trijicon MRO, 7 Magazines
This German-made HK USC in factory light gray polymer presents a clean, upgraded configuration that mirrors a common UMP-style approach while retaining the USC receiver and magwell. It features a HERA Arms stock conversion with rear hinge, receiver-top Picatinny rail, HDPS-marked forearm rail, and an HK SD UMP faux suppressor-style barrel shroud. Proofed at Ulm with the AG (2006) date code and imported by HK Inc., Trussville AL, it includes a mounted Trijicon MRO red dot and a total of seven magazines.
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: Polygonal rifling in excellent condition.
Specific Condition Notes: This firearm is in great shape. There are minor scratches and small blemishes on exterior surfaces from light handling.
What’s Included
- Trijicon MRO 2.0 MOA red dot sight (mounted)
- Trijicon MRO hard case (model 2200005)
- HK USC OEM gray thumbhole skeleton stock (not installed)
- Magazines: 3x 20-round and 4x 10-round; includes factory HK USC polymer magazines and extended-length ProMag magazines
German manufacture and markings stand out on this USC. It carries the Ulm antler/N proof, the AG (2006) date code, and the HK Sidearms GmbH – Made in Germany legend, with the Heckler & Koch Inc., Trussville AL import mark. The ejection port is marked "HK .45 ACP," aligning with the caliber and model lineage.
The rifle is configured in the factory light gray polymer receiver and frame, paired with an aftermarket black HERA Arms stock conversion that adds a rear hinge. This setup reflects a popular UMP-style conversion while keeping the USC receiver and magwell intact. The original gray USC thumbhole skeleton stock is included but not installed.
Accessory mounting is well supported. A receiver-top Picatinny rail is installed for optics, complemented by an HDPS-marked forearm accessory Picatinny rail. The rifle retains adjustable iron sights, and a Trijicon MRO red dot sight is mounted for ready use.
The 16-inch barrel features polygonal rifling and is fitted with a faux "SD UMP" barrel shroud (HK SD UMP faux suppressor). The action is simple blowback, closed-bolt, with a top charging handle that includes a hold-open notch and a selector safety for user control.
Chambered in .45 ACP, this USC uses the USC-pattern detachable box magazine system. Capacity is listed at 20+1, and the package includes three 20-round magazines and four 10-round magazines, comprising both factory HK USC polymer and extended-length ProMag options.