Browning Automatic Rifle — the standard US squad automatic weapon. Designed by John Browning for walking fire during WWI. Fired from 20-round magazine at 300-650 rpm. No quick-change barrel limited sustained fire. Type: Machine Gun Action: Gas-Operated Caliber: .30-06 Springfield Capacity: 20 Year introduced: 1917, USA Weight: 432 oz Overall length: 48" Status: Discontinued Military use: Yes Intended use: military