Did some quick reading and the Mi-8t can have a few goodies. Either front or side mounted guns as well as rocket pods. There are about a dozen or more variants of the Mi-8 but I would speculate that the underlying frame is what matters.

From my experience we with other military helicopters (not Russian ones), helicopters are fairly “modular”. The mounting points for guns may still be on the frame, but windows can be easily swapped out (or simply opened) when needed.

A good visual on that “modularity” is the difference between a Blackhawk and a Seahawk and the position of the rear strut. Same frame, completely different positions of the wheels. (Having been inside the tails of a few Seahawks, I can tell you the framing is still there, it’s just lacking everything else.)

Probably something like this (forgive the red circle, not my edit)

Looks as though it can be stowed in the twin landing gear looking doors