The PP-Bizon is a Russian-made submachine-gun manufactured by Izhmash (ИЖМАШ in Russian), and has been in production since 1996. The Bizon is capable of firing various cartridges like the 9x18mm Makarov, 9x19mm Parabellum, .380ACP, and 7.62x25mm Tokarev rounds. Based on its design, the Bizon in-game fires a 64-round magazine of 9x18mm Makarov pistol cartridge, which is the cartridge the Bizon is most commonly seen using. It's available for both factions. The player can carry 120 reserve rounds for this weapon.
When held, the player's movement speed is 240 units per second, meaning they suffer a very slight speed reduction.
Remember, if a Flashbang does blind users, they may spray their bullets wildly thus be careful in how to approach them.
Try not to use a Smoke Grenade as users are capable of continuously firing the PP-Bizon for long periods of time without having the need to reload so often (unless they are low on ammo). Instead, a combination of a well-placed HE grenade and your own weapons should be good enough to eliminate users.
The Bizon's draw and boltpull animations are similar, if not identical, to those of the AK-47.
Though it uses 9x18mm Makarov, the in-game PP-19 is coded to use the same 9x19mm Parabellum round that the Glock-18, Tec-9, Dual Berettas, and MP9 use. This is likely to avoid having to program a unique ammunition type for it (although in real life it can use the 9x19mm Parabellum round, in which case it would hold 53 rounds per magazine, the later successor, PP90M1 has the similar Helical magazine that holds 64 9x19mm rounds).