Reader Larry sent me this video, which was produced by the US Army Ordnance Corp just recently. It’s a one-off experimental submachine gun built in 1918, and is definitely not something like you have seen before. In order to maintain commonality of ammunition and magazines, the gun uses standard M1911 7-round mags and ammo. You might wonder, how can one have a practical SMG with a 7-round magazine? Well, by making a turret of 10 magazines held together, of course!
I think we can all understand why it wasn’t put into production and service, but it sure is interesting. I would love to get some more information about it, like whether the turret automatically indexed or had to be manually repositioned after every 7 rounds fired.