I´m not sure if this post is in the right forum, I want to share some info about the Mexican Trejo Model 1 "The World´s Smallest Machine Gun by its time 1950´s maybe the fastest too with a 1200 - 1400 rate of fire round per minute".
According to Forgotten Weapons, "Trejo was basically styled after the Colt 1911, but with a more aggressive grip angle, registered fully automatic Trejos like this one even in Mexico are actually quite rare" In the US you may find them around 9 - 10K like the one in the next video.
Information
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I'd like to know how well that worked in combat. I was a gunner for a long spell when I was young enough to carry all that crap and it would be unworldly heavy and clumsy. Damage to the feed chute would cause a prolonged stoppage for sure, and always at the worst time... For just makin' empty brass though, great times.
But for the little pistol, what's more fun than a .22 and an endless magazine...?