The CZ Scorpion EVO 3 S1 is the US civilian pistol-configuration version of the Czech military and police 9mm submachine gun. It uses a simple blowback action with a very low bore axis, contributing to minimal muzzle rise. The pistol ships without a stock and with a 7.72-inch barrel. It accepts 20-round translucent magazines and accepts AR-pattern pistol grips. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 20 Year introduced: 2015, Czech Republic Weight: 87.5 oz Overall length: 15.1" Status: Active Intended use: sporting, law_enforcement, home_defense