Another with late and mixed parts.
This guys says I'm sure carbine collectors know what they are looking at. I think he is expecting huge dollars. It will bring a good price, only 28,949 receivers were contracted (War Baby page 383) from OCT 1943 to March 1944. But I think he might be disappointed. No reserve.
M1Carbine UnQuality WWII Era Quality Hardware M-1 : Semi Auto Rifles at GunBroker.com