One of a series of armoured cars based on the GAZ-AAA six-wheel truck chassis, the Russian BA-6 was developed from the very similar BA-3 design and produced from 1935 to 1939. Using the same turret as the T-26 and BT-5 tanks, its 47mm gun gave it good firepower for an armoured car but against this it only had thin armour and its 6x4 layout meant it had poor off-road mobility. The Russian BA-10 was a replacement for the earlier BA-6. The BA-10 was armed with a 45mm as the main armament wi