Human: Who designed the M1 Garand rifle? Assistant: 
The M1 Garand Rifle was designed by John Moses Browning. He was a firearms designer who invented many different types of guns, including the M1911 pistol, the M1903 rifle, and the M1917 rifle. He also invented the Colt.45 revolver, the Browning automatic rifle, and the Browning machine gun.