unmarked walnut stock on Imported M1 Carbine?

[jjjxlr8]

Yes, the finish on the barrel and receiver look original and the bolt is "OI" marked. I know the trigger housing is marked with the "INLAND" logo but I haven't gone through each piece, yet. I suspect it's a rebuild, just wondering if it was rebuilt in a foreign Country.

I haven't looked up all of the markings but I don't think these are original as the rifle left the factory.

front band:



rear sight: