Magnum Research Inc. (MRI) is an American privately held corporation based in Fridley, Minnesota which manufactures and distributes firearms. The majority owners, Jim Skildum (President and CEO) and John Risdall (Chairman, COO), have been with the company since its founding in 1979.In June 2010, Kahr Arms, an American-based producer of compact pistols, announced its purchase of the Minnesota-based firearms manufacturer.