The MP5 A2 is the fixed-stock variant of HK's legendary 9mm submachine gun, adapted into a semi-automatic configuration for law enforcement and civilian use. The 8.85-inch barrel and roller-delayed blowback mechanism are the defining features of the most widely deployed submachine gun in Western law enforcement history. The A2 designation indicates the solid fixed stock. The MP5 platform has been manufactured in over 100 countries' hands and remains in active service worldwide. Type: Rifle Action: Semi-Automatic Caliber: 9mm Capacity: 30 Year introduced: 1966, Germany Weight: 176 oz Overall length: 26.8" Status: Active Intended use: law_enforcement, collecting, historical