Magnum Research Inc. (MRI) was an American privately held corporation based in Fridley, Minnesota which manufactured and distributed firearms. The majority owners, Jim Skildum and John Risdall, had been with the company since its founding in 1979.

Fridley is a city in Anoka County, Minnesota, United States. Its population was 29,590 at the 2020 census. It was first settled as a placed named Manomin where Rice Creek flows into the Mississippi river and the Red River Oxcart trail crosses the creek. Fridley was incorporated in 1949 as a village, and became a city in 1957. It is part of the Minneapolis–Saint Paul metropolitan area as a northern "first-ring" or "inner-ring" suburb. Most of the growth in Fridley occurred between 1950 and 1970. Fridley borders Minneapolis to the southwest. Neighboring first-ring suburbs are Columbia Heights to the south and Brooklyn Center to the west, across the Mississippi River.