Over the years, the M1 Carbine was a popular lend/lease item to our allies, so it is not unusual to see specimens with some pretty exotic markings. Condition on some of these imports can be pretty iffy, so there are firms that offer replacement parts and even complete rebuilds to origina...
Mag Catch- check which type you have, and any marks on it. Plain or serrated are early types, ones marked with "M" are later. The M2 carbine had a "finger" that extended into the magazine well (to hold the 30 round magazine more securely). Look on the side of the mag catch facin...