This entry details the unique locked breech, rotating barrel mechanism of the rare Prototype vz.38 'Nutcracker' pistol in 9x19mm. Expert Ian McCollum explains its departure from standard blowback designs, highlighting the helical cam grooves and locking lug system responsible for barrel rotation during cycling. The guide focuses on understanding these internal mechanics, crucial for gunsmiths and advanced firearm enthusiasts interested in historical experimental designs.
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