Yea I never bought that guys in caves an huts building these.
I think I could make the thing. Im not sure Im the guy to properly temper it. thats out side my abilitys. Id need a rotory table that can be set up flat and at a 90. ( Mine only lays flat ) a tool post grinder for my lathe. man there is a lot of steps. Id do extra long like mentioned before. Id make it large stem although there seems to be a reason all the newer bolts are small stem some thing abut the smaller being more reliable
Id never make these to resell by hand turn equipment it would cost more than a new Saiga 308. now if it can be done on a cnc deal and in multipul quanitys.