Kahr Arms is an American small arms manufacturer specializing in compact and mid-size semi-automatic pistols chambered for popular cartridges, including .380 ACP, 9mm Luger, .40 S&W and .45 ACP. Kahr pistols feature polymer or stainless steel frames, single-stack magazines, and double-action-only striker firing actions. Kahr Arms is part of the Kahr Firearms Group, a US-based firearms manufacturer, which also includes Thompson Auto-Ordnance and Magnum Research. The Kahr Firearms Group company headquarters is in Greeley, Pennsylvania, with a manufacturing facility in Worcester, Massachusetts.