When I worked at a gun shop, I had a guy come in to pick up a transfer, it was a international harvester Garand, this was right as the cmp got that huge lot back from turkey, I asked what he paid (he bought it from Simpsons in Illinois) he said 4500, I said you paid too much and that the cmp had harvesters for 1200! (I’m in Evansville and everyone wants a harvester!) he said “take a closer look”…so I looked and every visible part was marked ih…I said “never mind you got a bargain!”
The production issues were because Springfield was upset that they lost the contract, so Springfield “doctored” the equipment and plans that were sent to Evansville and thought that the government would pull the contract and send it back to SpringfieldHere's some "Gee Wiz" info. Not EVERY IH Garand was made in Evansville. SA had to make some of them, but were still IH marked. This because IH had massive production issues and SA had to step in.
Here you are. They didn't give a freaking hoot which part went with what receiver.
The notion of a correct M1 rifle is a fallacy.