The MP5A3 features a collapsible metal stock, making it more compact than the fixed-stock A2 while retaining full capability. The preferred MP5 variant for SWAT teams requiring a weapon that can be stored in patrol vehicles. Type: Submachine Gun Action: Roller-Delayed Caliber: 9mm Capacity: 30 Year introduced: 1977, Germany Weight: 5.6 oz Overall length: 25.8" Status: Active Intended use: Law Enforcement, Special Operations, SWAT