That's a T-28, not a KV-1

Xirx said:

That's a T-28, not a KV-1

Oops sorry, I was adding it to the tag box to easier get to the search to check, and I forgot to fix it later.

The Gun in the background is a M-30.
https://en.wikipedia.org/wiki/122_mm_howitzer_M1938_(M-30)