The MP7A1 is HK's personal defense weapon designed to defeat body armor at close range. Used by German KSK, British SAS, and various NATO special operations units. The 4.6x30mm cartridge penetrates NATO CRISAT armor at 200 meters. Type: Submachine Gun Action: Gas-Operated Caliber: 4.6x30mm Capacity: 40 Year introduced: 2001, Germany Weight: 4.19 oz Overall length: 16.4" Status: Active Military use: Yes Intended use: Military, Law Enforcement, Special Operations