They never produced a B Model as the first GAZ As were not produced until 1932. During the War The GAZ M and GAZ AAs were produced at the same time. The GAZ A variants were the main cargo Truck of the Red Army right up to the end of the war. They were also converted into Ambulances, Fire Engines, Armoured Cars, Rocket Launchers and Anti Aircraft platforms. The GAZ M variants were the main staff cars with a number of them being made into 4 X 4 s. The GAZ As were virtually identical to Model As but the GAZ M variants had an X crossmember Frame with a semi elliptic front and rear end similar to a 35 Chevrolet Standard. The heavy duty fenders and running boards were designed to withstand the appalling Russian roads.