The PP-19-01 Vityaz (Витязь in Russian) is a Russian submachine gun.
The Vityaz-SN was designed in 2004 by Izhmash. It is a variant of the PP-19 Bizon.
The Vityaz-SN is based on the AKS-74 and AK-105 rifles, and offers a high degree of part commonality between the two weapons. It uses simple blowback operating from a closed bolt, which leads it to not having a gas piston; the internals of the weapons were modified accordingly to its action. The weapon's barrel has four grooves with a 1:9 (240 millimeters) right-hand rifling pitch, with the muzzle brake having three small rectangular ports on the side. These ports serve two purposes; to prevent excessive muzzle rise, and to protect the muzzle from damage. The weapon's trigger grouping and safety are identical to that on the AKS-74, and the safety has three settings; safe, automatic ("AB") and semi-automatic ("ОД"). When set on safe, the safety lever physically blocks the charging handle. The weapon utilizes the folding shoulder stock of the AKS-74, and uses a pistol grip made of fiberglass-reinforced polyamide identical to the one on the AK-100 series. The weapon uses 30-round magazines which come with attachments fitted on the magazine; these are used to attach a second magazine to side of the magazine in the weapon.
The Vityaz-SN is chambered for 9x19mm Parabellum, but it can also take the newer higher-pressure 57-N-181SM armor-piercing round.
- Vityaz-SN (Витязь-СН)
Variant with added picatinny rails.