The Sport King firearm, produced between 1951 and 1958, is distinguished by its two distinct takedown mechanisms and barrel length options. Initially manufactured from 1951 to 1954, the Sport King featured a lever takedown system, which was subsequently replaced by a pushbutton takedown mechanism from 1954 to 1958. This transition reflects an evolution in design aimed at enhancing user convenience and operational efficiency. The firearm is available in two barrel lengths - 4-1/2 inches and 6-3/4 inches, catering to varying user preferences and shooting requirements. The Sport King's design and functionality make it a notable example of mid-20th-century firearm engineering.