It was supposed to be free-floating above the turret ring on magnetic repulsion.

As a compromise, the turret ring was made large enough to accommodate a 50 mm (2 inch) gun should a future upgrade be required.

The turret-less hull has bins on the roof over the turret ring.

Subsequently the hull was more narrow, offering a smaller turret ring.

There was a fuel tank in the front, the line for which went along the turret ring.

The turret ring is not blocked, and the drive mechanism still works.

And the 60mm gun was absolutely the biggest one that would fit on the turret ring of the old chassis.

The turret ring wouldn't take any of the bigger guns.

It is fed from a forty round magazine located around the turret ring.