The PP-2000 is a submachine gun made by the KBP Instrument Design Bureau. It was first publicly displayed at the Interpolytech-2004 exhibition in Moscow even though its patent was filed in 2001 and issued in 2003.
The PP2000 chambers the 9x19mm Parabellum. One can store an extra 44-round magazine at the rear of the weapon which doubles as a stock. One pulls the exposed end of the bolt carrier to charge the gun.