Do you mean CMP? I too got a 800,000 SA from the CMP it was my 8th ordered and has lots of WWII parts and fifties SA stock with a 1951 SA barrel. My best guess is it saw WWII and rebuilt for Korea. If wood and metal could talk? It's my favorite and gauges good but I can't bring myself to shoot it. I have other M1s for that.
Guts we must have posted at the same time (or within the same minute) or I would not have said what you said (CMP)