They probably fashion a jig for each type of AK kit they come across. I was at ORF today and that would have been a great thing to ask about, but I was too star crossed by all the stuff in the machine shop to remember.
Funny how a greasy machine shop with guns, parts, and kits all over the place can look like paradise to someone.
I'll try to remember and maybe I can get Todd to answer this as well. When he gets time he is a good guy, but damn busy! I hope he gets some time to relax, but as popular as his stuff is taht might not happen.