The very first automatic rifle was the Mexican Mondragón rifle. It was designed by General Manuel Mondragón. He began working on the weapon in 1882. He patented it in 1887. In the 20th century, automatic rifles go back to World War I. This is where the Browning Automatic Rifle (B.A.R.) and Huot were first used. They were supposed to be used like light machine guns to help soldiers attack. However, only the Mondragón rifle and the B.A.R. were used in World War I.