Gr1ff1th said:

That is a monster vehicle

Eh, for the US side yes.

The Russians though have built some really beastly (and cool looking) vehicles.

The BMPT-72 'Terminator' is basically out of the Terminator franchise; dual 30mm cannons + 4x missiles + reportedly 2x 30mm AGL's....

And then the T15 Armata with 57mm cannon looks like a land battleship, the 57mm shell is supposedly ~2x the weight of the 50mm.