The Browning Arms Corporation manufactures the gas-operated, semi-automatic rifle known as the Browning BAR since 1966. The Browning BAR comes in a variety of models, including the Lightweight Stalker, Long- and ShortTrac, and Safari. A removable box magazine is used to load the weapon. The Safari model has a walnut stock and an engraved steel receiver. Depending on the cartridge, the barrel measures 22, 23, or 24 inches in length. Safari is the only model featuring the Browning BOSS (Ballistic Optimizing Shooting System). The system's adjustable muzzle brake and weight reduce recoil and improve accuracy. The receiver on the Lightweight Stalker model is made of aluminum alloy. Instead of a walnut stock, the stock is matte black synthetic. The Stalker is the only model with iron sights. The length of the barrel is 20, 22, 23, or 24 inches. The aluminum-alloy receiver, plastic trigger guard and floorplate, and more eye-catching stock are all features of the LongTrac and ShortTrac variants. The barrel measures 22, 23, or 24 inches, depending on the version and cartridge. Every BAR rifle has the same long action length since the MK3 upgrade.