The T-60 light tank was chosen because Romanian industry could maintain it, not least because its engine was a license-built Dodge-DeSoto-Fargo F.H.2 for which spares were available in both Romania and Germany.

A fighting compartment was built using armor salvaged from captured Soviet tanks and the suspension was reinforced to handle its greater weight.

In 1942, the Soviets attempted more than once to mount the same 76.2 mm field gun to the T-60 chassis, but failed due to the latter's supposedly inadequate size.

[3] Yet, the Romanians managed to successfully materialize the concept and even put it into serial (albeit limited) production.

Romanian industry was unable to maintain 16 Allied tanks and assault guns mounting guns of 75 mm or larger — six T-34s, two KV-1s, two T-28s, one IS-2, one ISU-152, and four M3 Lees — which Romania captured, relegating them to use only for anti-tank training.

The gun-laying mechanism was modified to suit Romanian practices and a recoil guard was added to protect the gunner.

The armor plate for the gun shield was salvaged from captured Soviet BT-7 cavalry tanks.

The extra weight of the gun required that the suspension be modified with stronger torsion bars and new road wheels.

The new vehicle weighed 9 tons fully loaded and required a crew of 3 to operate.