No 4. M1 GARAND – USA Type : Semiautomatic Caliber : 7.62 x 63 mm Muzzle Velocity : Approximately 2,838 feet per second Rate of Fire : 30 rounds per minute. The M1 Grand entered the battlefield in 1941 and instantly proved to be the one of the toughest in the field. At the end of the 2nd World War, General Patton remarked that the M1 may have been the greatest battle implement ever devised. The M1 Garand was phased out in the 1960s.