SMG - 9x19mm NATO - Russia/CIS - 675 RPM - The Bizon is a modified AKSU-74, for situations when a rifle cartridge might be inappropriate.  It has a unique helical magazine with allows it to carry a large amount of ammunition in a relatively compact space.  The 9x18mm Makarov version is most common, but the 9x19mm NATO is made for export. D.E. Watters