The MPX Copperhead is the smallest MPX configuration, featuring a 3.5-inch barrel in a pistol-configuration package that is barely larger than an oversized handgun. The Copperhead's compact dimensions — 14.3 inches with brace attached — make it an ultra-compact suppressor host and PDW-category firearm. It uses the same piston operating system as the full-size MPX and the same proprietary 9mm magazines. Type: Pistol Action: Semi-Automatic Caliber: 9mm Luger Capacity: 20 Year introduced: 2019, USA Weight: 4.4 oz Overall length: 14.3" Status: Active Intended use: law_enforcement, duty, suppressor_host