 Since CZ-Praha was a relatively small factory with limited industrial capabilities, it was decided to transfer the production of the new automatic weapon to the more advanced Zbrojovka Brno, or ZB in short.This transfer resulted in a long series of court trials over royalties, between the owners of the design (CZ-Praha) and the manufacturer (ZB).Designer Václav Holek was charged by the Czechoslovak army with producing a new light machine gun.