7/27/2023 0 Comments Soldier of fortune magazine aksThe handguard is a sheet metal stamping with three rounded rectangular ventilation slots on each side. The pinned and riveted sheet metal receiver of the Bizon is derived from the AKS-74 and has been modified at the front end, since the gas system was omitted. The gun's muzzle device has a large rectangular port on each side of dead center that serves to reduce muzzle jump, although the main purpose of this device is to protect the muzzle and magazine from impact damage. The Bizon has a four-groove barrel with a 240 mm (1:9 in) right-hand rifling pitch. The return spring and guide rod are identical to those of the AK. The bolt carrier with fixed charging handle was recycled from the AK, but the piston rod and rotary bolt were removed and the piston extension was plugged with a steel insert. The Bizon has no gas system and the internal components have been modified accordingly. This has the effect of reducing perceived recoil and increasing firing stability and hit probability. A rate of fire of 650–680 rounds per minute is the result. High-impulse ammunition drives the bolt all the way to the end of the receiver, lightly striking the receiver wall. 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 minute. The Bizon uses a simple straight blowback method of operation an unlocked breech system reduces cost and build complexity. Ĭhambered for the standard Russian 9×18mm Makarov pistol cartridge, the gun will also fire a new high-impulse armor-piercing 57-N-181SM round. It is based on the AKS-74 and features a 60% parts commonality with the AK-74 assault rifle. The weapon has a notably large magazine capacity. The Bizon is a lightweight selective fire weapon that fires from a closed bolt, a feature that enhances the gun's practical accuracy. The Bizon has been largely replaced by the PP-19-01 Vityaz in Russian service, which was developed directly from the design of the Bizon, due to reliability issues with the helical magazine. It was used in combat operations against separatists in the North Caucasus region, namely Chechnya and Dagestan. The Bizon is issued to armed response units of the Federal Security Service (FSB) and Ministry of Justice in Russia. 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. It features a distinctive helical magazine under the barrel that can hold 64 rounds. The Bizon was developed at the request of the Russian 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. The Bizon was designed by a team of engineers headed by Victor Kalashnikov (son of engineer Mikhail Kalashnikov, creator of the AK-47) and including Alexei Dragunov (youngest son of Yevgeny Dragunov, the creator of the SVD sniper rifle). The PP-19 Bizon ( Russian: Пистолет Пулемет Бизон, Pistolet Pulemyet Bizon, " Bison") is a 9×18mm Makarov submachine gun developed in 1993 by the Russian company Izhmash.
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