
The drive sprocket is assumed to be at the front, as the idler at the rear extends somewhat beyond the rear of the tank, again much like the Sherman family of vehicles. The running gear consisted of 5 Vertical Volute Spring Suspension (VVSS) units per side, each having 2 roadwheels and built-in return rollers. While the chassis was unspecified, it clearly took inspiration from the M4 Sherman. He called the vehicle “M-16”, clearly confident enough in its adoption by the Army that it would not require a prototype “T” number, yet distinct from the Army’s own nomenclature, which did not use dashes. This was the brainchild of Mark Kubiak, a boy living in Spokane, Washington.

Ostensibly a self-propelled gun, the design was closer to a hybrid between an assault gun and a Vietnam gun truck, with the forward half of the vehicle dedicated to a 105 mm howitzer, and the rearward half to an elevated platform with multiple mounted machine guns. In 1962, an up and coming tank designer drew up plans for a new type of fighting vehicle.
