The MP5 A5 SD combines the collapsible stock of the A5 configuration with the integral suppressor of the SD series. Representing the most versatile MP5 configuration for covert operations requiring variable length, it was issued to German GSG-9 and allied CT units requiring both length adjustment and suppressed fire. Type: Submachine Gun Action: Roller-Delayed Blowback Caliber: 9mm Capacity: 30 Year introduced: 1980, Germany Weight: 7.9 oz Overall length: 30.71" Status: Active Military use: Yes Intended use: Special Operations, Covert Operations, Military Use