Defendant
1 case as defendant.
HK Parts Inc. is a privately held company based in Draper, Utah, that specializes in parts and accessories for firearms manufactured by Heckler & Koch. The company was incorporated in Utah in 2009, although its origins trace back to a sole proprietorship founded in 2003. It operates primarily through its website, hkparts.net. Publicly available information estimates its size at 2-10 employees with revenues in the $5 million to $20 million range.
The company positions itself as a leading supplier of Heckler & Koch components, offering a wide selection of factory and aftermarket parts. Its product catalog includes triggers, barrels, magazines, stocks, handguards, and parts kits for a variety of Heckler & Koch rifles, submachine guns, and pistols, such as the MP5, HK416, and VP9 models. In addition to firearm-specific components, HK Parts also sells gear, accessories, and armorer tools. The company is not affiliated with the German arms manufacturer Heckler & Koch GmbH or its US subsidiary, HK-USA.
As an operating company, HK Parts Inc. appears in the patent litigation database as a defendant. The company has no record as a plaintiff. Its single tracked case, Rare Breed Triggers Inc et al. v. HK Parts Inc., was filed in the Utah District Court in February 2026. This defensive posture is typical for an operating company involved in patent disputes.
The accused product is a firearm trigger mechanism, specifically an adapted forced reset trigger.