Hey everyone!

I did a search and didn't really find what i was looking for, but I have a friend who wants a 7.62x39 bolt gun. He may have a donor rifle in his collection, but I have questions. I am assuming the short action is what is needed, a 223 or 308 gun. I think it is a special bolt head correct? Pretty sure my 6.5Grendel shell holder is different than anything else I have, which is the same shellholder as 7.62x39. So what about magazines for the x39? That stupid taper I am sure is the problem with mags, correct? Where is the best place to get a budget minded barrel? oh, and is it a 308 barrel or a 310/311 barrel?

Thanks all!!