for the record
So that nobody thinks I'm just a video gamer, I've shot .30 carbine a good bit. albiet not in combat but at a range. I had the opportunity to handle and shoot a wide range of GI carbines in the late 80's, the M1 carbine was still the Fed Bureau of Prisons tower rifle (can you believe that) and everybody from BOP learned how to shoot, from the dentist/secretary to the genuine corrections officers. I was lucky enough to pull some details as an instructor at the academy. I agree, a hoot to shoot, light, handy, and even the most recoil sensitive trainee could shoot them well. We shot up all the loose surplus ammo at the conclusion of each class, easier than turning in partial boxes.
Regards the comment "the army ord board had been working on it for years"....the concept probably, the ctg, not so sure. The light rifle concept had been around, likely since post WW1, but the project took life in June 1940. My source says Winchester (PUGSLEY) suggested the ctg to the army and they bought it. NO TESTING Invites to mfg's took place in Oct '40,and the M1 Carbine as we know it was accepted in Sept '41. That's not years, that's not even two, and less than a year if you only count the time from invite to acceptance.
Maybe it was just all wartime expediency?