after encountering the german tiger tank, the sovjet army decided it needed a better tank than their current T-34(-76) and KV-1 tanks. they decided to upgrade their existing T-34 tank with a new 85mm cannon in an enlarged turret, as well as doing some other, more minor changes. the result was this, the T34-85, one of the best tanks from WW2. it's gun was powerfull enough to deal with most german tanks even after the introduction of the Panther, Tiger II and Jagdtiger tanks, which all had very thick frontal armor.
this tank is gunless as-is but does have internal hovers already added to it. you can mount any weapon you want but i advice disintregrators for good firepower at all ranges and against any target.