I believe the .30 Carbine was/is superior to both the M1928M1 as well as the M3A1. It even oupterforms the H&R Reising M50. (Though I have fancied an H&R Reising M60 for a short range carbine). After many hours of cogitation and rumination (Believe me, that can be painful)! The .30 Carbine which, contrary to popular belief is a short rifle cartridge, not a pistol cartridge as so many have asserted! This property, is what makes it successful 75 years after it's inception/introduction, in countries around the world.