The Smith & Wesson Model 457 is a compact semi-automatic pistol from Smith & Wesson's "third generation" series of alloy and steel-framed handguns. The 457 is a compact pistol chambered for the .45 ACP cartridge. The design utilizes a traditional double-action trigger mechanism, meaning that the first shot is fired with long double-action pull, with following shots fired in single-action.
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