Prototype French MAS-49 SMG in .45ACP

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In the late 1940s the French developed a new suite of small arms, including a competition to replace the 7.65mm MAS-38 submachine gun with a new 9x19mm SMG. The eventual winner of this program was the MAT-49, which became an iconic part of French Army weaponry in Algeria and elsewhere. The St Etienne arsenal also submitted a design though, and theirs was a lever-delayed system. In addition to the variety of models in 9x19mm, it appears that they also made a couple examples in .45 ACP. I’m not sure why this was done, but it is interesting to see!