The Browning Automatic Rifle, BAR, the original squad automatic weapon. The M1918A2 Browning Automatic Rifle (BAR) was the WWII version of the M1918 BAR, used at the end of WWI. The overall finish was parkerised. It had a selector switch to select 2 rates of fire: 500 or 200 rpm., but it didn't have a single-shot mode. The 20-round magazine could hold 20 standard caliber .30-06 rounds.