Well, crap. I missed the re-64 part of the op's post. With a pre-64, I would reshape the tang to pre-war specs, thin the left receiver wall, and hollow the bolt handle, if it is not already hollowed. I would thin the recoil lug. I would replace the bottom metal with fwt metal. I would not trim the mag well or turn the ring. The rest stands. GD

Last edited by greydog; 11/11/22.