Continued development resulted in the improved UB which came in three versions: UBK (Kрыльевой, Krylyevoi, for the wings), UBS (Синхронный, Sinkhronniy, Synchronized), and UBT (Турельный, Turelniy, for the turret), with UBS and UBK charged by compressed air.
Berezin UB (УБ - Универсальный Березина, Univerzalni Berezina) je bil sovjetska 12,7 mm letalska strojnica, ki se je veliko uporabljala v 2. svetovni vojni.