The BA-27 was a Soviet first series-produced armoured car, manufactured from 1928 to 1931, and used for scouting and infantry support duties early in the Second World War. The BA-27 was a heavy armoured car, having the same turret and armament as the first Soviet tank, T-18, manufactured at the same time: the main gun was a modified copy of the French 37 mm Hotchkiss SA 18 cannon, and it was supported by an additional machine gun.