There is a serial number that matches the receiver on the top of the barrel under the rear of the hand guard. But, no, there is not anything stamped into the stock. That would correlate with your research.

I'll still have to search for the other mag this carbine was purchased with. But, the one in the carbine has that ugly green paint on the bottom half like the bayonet. But, the carbine has no green paint.

Thanks.