Yep, ~ 6 million M1 Carbines vs. about 4 million M1 Garands were made during WWII. Carbines were sent all over the world after WWII in the MAP program.
I have several Garands, but only one M1 Carbine. Its a Quality Hardware Corp post-war rebuild/mix-master, but it has a nice patina. I have yet to shoot it.