Caliber: 9x18mm Makarov
Weight: 1.65 kg with empty 20 rounds magazine
Lenght (stock closed/open): 325 / 485 mm
Barrel lenght: 167 mm
Rate of fire: 900 rounds per minute
Magazine capacity: 20 or 30 rounds
Effective range: 100 meters

AEK-919K is a simple blowback operated, selective fire submachine gun. It featured a "sleeved" bolt which, in forward position, encloses the rear part of the barrel. AEK-919K is fired from the open bolt, and fed from the two-column magazines that hold 20 or 30 rounds. Receiver is made from the stamped steel, pistol grip with triggerguard and a heatshield are made from the plastic. Cocking handle is located at the left side of the receiver and does not move when gun is fired. AEK-919K featured an "L"-shaped open rear sights marked for 50 and 100 meters distance, it also can be equipped with laser aiming device and "red dot" sight. Barrel of the AEK-919K featured polygonal rifling and threaded muzzle, so a silencer can be quickly installed if required. Retractable stock is made from the steel, with rubberised buttplate.