All you have to do is just remove fsb then use a thread kit with thread alignment tool to keep threading strait. Now depending how much Norinco took down the barrel you can do 14x1 lfht standard thread or if you got one they took down a little more your going to have to thread 1/2x28 thread pattern and then go to AKfiles where you can get 762 muzzlenuts and slant comp in that thread pattern.