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The .380 ACP (9×17mm) (Automatic Colt Pistol) is a rimless, straight-walled pistol cartridge developed by firearms designer John Moses Browning. The cartridge headspaces on the mouth of the case. It was introduced in 1908 by Colt, for use in its new Colt Model 1908 pocket hammerless semi-automatic, and has been a popular self-defense cartridge ever since, seeing wide use in numerous handguns (typically smaller weapons). Other names for .380 ACP include .380 Auto, 9×17mm, 9mm Browning, 9mm Corto, 9mm Kurz, 9mm Short, and 9mm Browning Court (which is the C.I.P. designation). It should not be confused with .38 ACP. The .380 ACP does not strictly conform to cartridge naming conventions, named after the diameter of the bullet, as the actual bullet diameter of the .380 ACP is .355 inches.

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  1. Soren

    The .380acp Pic Thread

    • Bersa Thunder .380 • Browning BDA • Beretta 85BB • Walther PPK/S
  2. SynapticSilence

    NAA Guardian .380

    Just picked this up today. Hard to find. Davidson's only had one in stock on line so I grabbed it. Tiny little powerhouse. Not a lightweight. Solid steel. Sights are minimal but NAA offers slide milling for standard/Novak sights for not that much. But it's not meant for much other than close up...
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