The AK-9 is a Russian compact subsonic assault rifle.
The AK-9 was designed in the early 2000s by IZhMASh, now known as Kalashnikov Concern, after listening to a proposal by Russian special forces to develop a rifle which would combine the famed reliability of the AK rifle platform and the advantages of stealth and maneuverability. The rifle was meant to compete against similar platforms such as the AS Val, 9A-91 and the SR-3M, and has since seen minor use by various Russian special forces.
Heavily based on the AK-100 series rifles, the AK-9 was designed to be used by Russian special forces. Unlike most of the rifles the AK-9 is based on, the AK-9 is specially designed to fire the 9×39mm subsonic round, in addition to having an integral suppressor; this allows it to fire virtually without making any noise.