We get this question almost everyday in the shop.
Same answer always.
Precision rifles are built to Minute Of Angle= M.O.A.
Battle rifles are generally built to Minute Of Man=M.O.M.
With a few exceptions such as the AR platform and the M1A based rifles.
Wrong tool for the wrong job.
I usually tell customers that if they can hit a plate sized target at 200 yards then they are doing good.
Like Dfariswheel mentioned there are a few things that you can do to help a bit but dont expect miracles or MOA accuracy. Even the SVD (Dragunov) rifles have a tough time getting to 1 M.O.A @ 100 yds.
And they are not even a Kalishnakov design.