The HK MP5 is the most recognizable submachine gun in the world, adopted by law enforcement and special operations units globally. Civilian semi-auto variants fire from a closed bolt in pistol and SBR configurations. Type: Semi-Auto Pistol Action: Single-Action Caliber: 9mm Luger Capacity: 30 Year introduced: 1966, Germany Weight: 5.6 oz Overall length: 27" Status: Active Military use: Yes Intended use: duty, law_enforcement, range, collector