Read the horror stories of the Mark 1 M-1’s....
There were several copies (9, I think) of each series of the Armata platform. The IFV/AFV version is HUGE, it seems.
I read a little bit about the armata T-14. 3 man crew, remote controlled 125mm smoothbore cannon, and has some kind of armored shell inside the hull. Some kind of secondary layer of armor, I suppose. I want to watch an A-10 eat some.