Early model of Bizon submachine gun, with AKS-74 type butt and pistol grip, and with 64 rounds cylindrical magazine

Caliber: 9x18mm PM and PMM; 7,62x25mm Tokarev; 9x19mm Luger / Parabellum
Weight: 2.1 kg w/o magazine
Length: 425 / 660 mm (buttstock folded / open)
Barrel length: ?? mm
Rate of fire: 600 - 700 rounds per minute
Magazine capacity: 64 rounds ( 9 mm); 45 rounds (7.62mm)
Effective range: 100 - 200 meters, depending on ammunition used