The MGD PM9 is a unique 9mm submachine gun featuring a novel rotary-action mechanism powered by a clock spring. This design allows the entire mechanism to spin, enabling a compact folding capability and eliminating the need for a traditional heavy buffer. The firearm can be rapidly deployed from its folded state, showcasing advanced historical weapons technology.
This video explores Clement Pottet's pioneering work on the shotgun shell, detailing his 1829 and 1855 patents for metallic-based, paper-bodied cartridges. It showcases a rare Pottet shotgun featuring a unique rotating barrel action for cocking and extraction, highlighting its Damascus steel barrels and intricate internal mechanisms. The presentation emphasizes Pottet's foundational role in modern ammunition design, predating later refinements.
The MGD PM9 is a unique French submachine gun developed post-WWII by Louis Debuit, featuring an innovative rotary action powered by a clock-spring mainspring. Originally chambered in 7.65mm French Long, it was adapted for 9mm Parabellum using MP40 magazines for wider compatibility. Its design emphasizes concealability with a compact folding mechanism and an integrated cleaning rod within the stock.
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