Personally I've always thought amazing that .30 carbine wasn't more prevalent in SMG design.

The thing was tested in 3 wars (WWII, Korea, Indochina) was largely recognized as extremely useful as long as you're in the 200m range (which is much much better than what 9mm and .45 are capable of) due to the fact it's fairly flat shooting, you won't have much recoil (even in large caliber pistol in .30 carbine is described as not worse than .357).

It's kind of weird since you could have had MP5s and Browning in .30 carbine with teams carrying the same ammo and be far more effective than in 9mm. The sidearm would double as a flashbang too…

I think the M1 modification to full-auto (on a gun that was meant to be super light… surprise: it sucked!) basically killed the round.

>>666855

>MP5s in .30 carbine

I took those examples because it sort of exist, the original evolution of the STG-45, the CEAM Modèle 1950 was in .30 carbine.

It never went anywhere because the french army liked the tandem SMG/Semi-auto rifle to death and genuinely thought that the "assault rifle" concept was a mistake (to put it in the historical context: M14, FAL, G3 weren't capable of precise full-auto bursts in a moving assaults like a SMG was. 7.62x39/7.92x33/.30carbine/7.65×35mm which was a french experimental thing could but wasn't effective at a longer range) until light cartridges came around.

Same way the Automag III is basically Browning in .30 carbine.