The experimental caterpillar tractor on the tank T 40 chassis. Cabin from GAZ AA (MM). Tank control levers were replaced with onboard friction clutches with a steering wheel, and it coped as the car. Tractors were offered for transportation of a 76-mm gun or a zenitka together with calculation and and also for transportation in a body of twenty infantrymen. Carried out in January – March, 1941 of test of skilled cars revealed ability GAZ 22 to tow a heavy 122-mm howitzer of M 30. But premilitary deficiency of tank chassis did not allow ???????? in time this model in a series.
