bought my m1 today. serial# 32606xx saginaw sg. the barrel reads saginaw sg general motors. rear sight # ir co 7160060. only marks on the stock that i can see is #5 behind the trigger guard (on the wood). about what year is it? (paid $250 for it). from 1 to 10 it's 8.5-9. looks good.
About July 1943 is when your carbine was made. Well one thing is for sure. You didn't buy it you STOLE IT for $250. Great price for a harder to find carbine in that kind of condition. Pictures would be nice if you can.