Cope cages on Western tanks, I think. Russians have had them for awhile but theirs look like shit.
I’m not entirely sure what they’re supposed to accomplish, which is what makes it a cope ig. That’s going to be irrelevant unless someone travels back to the 80s and steals some HEAT ammo. The tiniest amount of RPG or Javelin protection is my best guess.
Plus, once you run out of ammo it makes a suitable(but slightly unwieldy) club.