this post is just to show what I have come up with on making a 80% cast fal reciver to a 100% working reciver.
last photo is of a 80% welded to a cut off stub, will work for a pistol cal fal but this is not what I would like. next is ( pic#4 not mine) some work on the out side of the reciver first. this may not be a good idea; the casting is/are a reject and might be bent/twisted and eat up too mutch time to get it to fit in the milling jig and that is how they got on the market, some even have broke off tooling in pre cut holes.
This (pic#1,2,3,5) is my idea to keep every thing true during the "making chips" trip to the mill.
the idea is use the barrel as a reffrence point to work off of. onece the end of the reciver is squre, drilled and taped for the barrel and the gas tube nut a fake barrel with a .25" rod will be screwd in and used to reffrence off of for all internal cuts. with a .25" rod inplace a .125" shim will fit in the boldt guide slots and the charging handel slot (pic#5).
what do ya think so far. muttman