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I've been neglecting this.
The CZ82 is a Czech derivative of the Walther PP pistol, same blowback action with the recoil spring around the barrel, same double-action/single-action trigger, same disassembly procedure by pulling down the trigger guard. The significant difference here is that the CZ82 uses a double-stack magazine, allowing for higher capacity, making for a capacity of 12+1 vs the PP's 7+1 in a comparable caliber.
The CZ83 is a commercial variant, chambered for .380 Auto, versus the Czech Military/Warsaw Pact 9mm Makarov cartridge of the regular model. The cartridges are very similar, so the design change was trivial.
