Ultra-compact MPX variant with a 3.5-inch barrel and integrated folding brace. Retains gas-piston rotating bolt. The Copperhead is the smallest gas-piston 9mm pistol in the MPX family and one of the smallest quality semi-auto 9mm pistols available. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 20 Year introduced: 2019, USA Weight: 4.6 oz Overall length: 14.5" Status: Active Intended use: PDW / Concealed Carry