Yea I think you are right. Those yugos are over-built.
If my barrel turning experiment works I will keep notes. I am going to try to use a turned down 1919a4 barrel.
I looked into the FN barrels but I dont know where the gas port is on them.
The barrel I am willing to send out to get turned right. I could do it, but not very well I think.
Does the yugo tunnion have more meat than the saiga?
Well good luck keep us posted on the fal barrel.