The AEK-918 is a Russian select-fire submachine gun, chambered for the 9x19mm Parabellum and 9x18mm Makarov rounds, developed by the Kovrov Mechanical Plant. The AEK-918 is offered as a weapon for certain categories of personnel (crews of aircraft and combat vehicles), as well as special forces of law enforcement agencies.
The weapon uses blowback and fires from a close bolt. Reloading handle is on the left side of the receiver. The lower part of the receiver and the frame of the weapon are made of glass fiber reinforced polyamide, and the top of the receiver is made of the stamped steel. The barrel has polygonal rifling, when disassembling is separated from the weapon. The trigger mechanism allows single and automatic fire. The pistol grip houses the magazine. To increase the stability of the weapon when firing, there is a telescoping stock that can turn around 180 degrees and can be folded into the weapon. The weapon has a front and rear iron sights, but can also mount special optics. A special type of silencer can also be attached to the weapon if needed.
The first combat use of AEK-918 submachine gun was seen in the spring of 1995 by one of the special forces of the FSB (which has received a batch of 100 submachine guns) during the restoration of the constitutional order in Chechnya. In 2002, the AEK-918 was used by crews of the Ka-50 "Black Shark" helicopters that operated in the war zone in Chechnya and Dagestan. In 2003, the AEK-918 submachine guns were officially adopted by the Federal Bailiff Service. As of October 2006, the AEK-919K Kashtan was applied by special units of the Ministry of Internal Affairs, FSO, FSB and FSIN.
- AEK-918 - base model, chambered for the 9x19mm Parabellum round.
- AEK-918G - a prototype, build by the classic scheme, chambered with 9x19mm Parabellum round. Has a weird-looking flash suppressor.
- AEK-919K "Kashtan" - a modification, chambered for the 9x18mm Makarov round. Probably used by different law enforcement agencies or has been already replaced with more modern submachine guns.