Why don't we just make our own?????
If you have a rotating table you should be able to make one, even without indexing. Heck, I think my indexer (doesn't rotate) could be used to build one. Just need to heat treat it properly. I would use 4340, but 4130 may be good enough?
Might as well make it a 3lug design while were at is and longer so we dont have to move the trigger guard. a m76/77 style bolt but with three lugs some thhing that will handel 65,000 Psi would be nice. I wonder what a sagia 308 will actually handel?? It can be done and Ive looked at doing it but if I were to do it Id want to make a bunch of them and I just simply dont have the funds for it or the insurance to sell them. I am starting to see more and more guys with CNC equipment talking about doing bolts and trunions. Turbothis ahs been playing with a CHC mill on the AK forum and he has made some cool looking stuff he was talking of doing 19mm trunions.