Sturm, Ruger & Company, Inc. operates through two primary business segments: firearms and castings. The firearms segment, which accounts for the vast majority of its revenue, designs and manufactures rifles, pistols, and revolvers for domestic customers, including law enforcement and military agencies, though its primary focus is the commercial sporting market. The castings segment produces steel investment castings and metal injection molding parts, mostly for internal use but with some external sales. The company's manufacturing operations are entirely based in the United States, with facilities in Connecticut, New Hampshire, North Carolina, and Arizona. In 2020, Ruger expanded its portfolio by acquiring the Marlin Firearms brand from the bankrupt Remington Outdoor Company.