I've had the chance to hold (not shoot it, thoug
) a Bizon-2 this year. It is simply blowback operated design. Available in choice of calibers - 9mm Short AKA .380ACP, 9x18mm PM/PMM, 9mm Luger and 7.62x25mm TT (latter - with the 32 rd curved box magazine, others with helical drums). The helical drum is very comfortable to hold, the rear grip currently is shaped more like of H&K MP-5 than of AK-74 (very comfortable). Overall, it is a great police entry weapon - a hell of a lot of short-range firepower, very controllable, available with noise dampers, LAMs, red dot sights etc.