How a PP-19 Bizon SMG Works | Operation and Field Strip | World of Guns

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Wikipedia: The PP-19 Bizon (Pistolet Pulemyot Bizon) (English: Bison) is a 9mm submachine gun developed in 1993 at Izhmash by a team of engineers headed by Victor Kalashnikov (son of engineer Mikhail Kalashnikov, creator of the AK-47 and AK-74).  Alexei Dragunov, youngest son of Yevgeny Dragunov (the creator of the SVD sniper rifle), was also a member of the design team.

The Bizon was developed at the request of the Ministry of Internal Affairs (MVD) and is primarily intended for counter-terrorist and law enforcement units that need fast and accurate fire at close ranges. Prototypes were trialed by the Special Equipment Research Institute in 1995 where they outperformed several competitors, and the weapon was accepted into service on 28 December 1996.

The Bizon is issued to armed response units of the Federal Security Service (FSB) and Ministry of Justice. It was used in combat operations against separatists in the volatile North Caucasus region, namely.


The Bizon uses a simple straight blowback method of operation; an unlocked breech system reduces cost and build complexity. The Bizon's operating cycle is characterized by a very short recoil stroke; standard 9×18mm ammunition will only drive the bolt partially to the rear of the receiver and results in a cyclic rate of 700 rounds per minut. High-impulse ammunition drives the bolt all the way to the end of the receiver, lightly striking the receiver wall. A rate of fire of 650–680 rounds per minute is the result. This has the effect of reducing perceived recoil and increasing firing stability and hit probability.