Have the back of the barrel tapped and use a long eye relief handgun scope.
a 2x or 2.5x fixed power will give you all the magnification you'll ever need for a 7.62X39.
I didn't fight to defend your freedom so you could vote to take away mine.
"A man who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself.
John Stuart Mill."