This...back in the golden age of milsurps prior to 1968 thousands of guns were sold as "Arsenal refinished" many guns after WW2 were rebuilt as a matter of policy. Captured weapons were refurbished by some victorious powers and placed in strategic reserve. Others were sold as surplus and reworked by the companies that sold them.
I remember getting a reworked HR M16A1 from Viet Nam era back in 1982. Nothing new here, it's SOP. CMP could make their own M1's for years if they wanted too, given the amount of parts on hand.
I know a lot of you guys wanna hold history in your hands and fantasize that your M1 was at Normandy or Iwo Jima, but more than likely it was issued to a cook at Ft Dix, NJ. In the end it was just a tool that spent most of its life locked up in some arms room.
If I wanted an M1 I'd really prefer one made new from parts, just like I'd like one of the new Colt 1903 Pocket Autos. YMMV. I love old guns and the history of firearms, but I'd rather have one I could shoot without feeling guilty about it. Like I said, YMMV.
CMP SPECiAL, would suite you well.? CMP Special (.30-06) M1 Garand. This is a completely refurbished rifle consisting of an original M1 Garand Springfield or HRA receiver, new production Criterion barrel, new production American Walnut stock and handguards, and new web sling. Receiver and most other parts are refinished USGI, but some parts may be new manufacture.
I'm sure if the pistol program works out they will have cmp special 1911s also.