As issued--not much
I did some casual reading on the gun for a role playing game, and found it interesting.
The Fedorov Avtomat was, essentially the first assault rifle, but it had a relatively low tollerance for dirt and grime, from what (questionable) materials I've seen. It also wasn't "soldier proof." A finicky weapon is NOT what you want for jungle fighting.
So, if it's generally issued as is, it jams, people loose parts, and get disgusted with it. If it's issued to assault troops that make short missions, it might well impress people.