High Quality Content by WIKIPEDIA articles! The ZB-30 and ZB-30J were the later versions of the famous Czechoslovak machine gun, the ZB-26. However, the ZB-30 had some design differences, making it similar to the later ZGB-33, which was put into production as the Bren gun. Like the ZB-26, the Wehrmacht adopted the ZB-30 after the occupation of Czechoslovakia, renaming it the MG30(t); it was used in the same role as the MG34, as a light machine gun. In the opening phases of World War II, the ZB-30 in 7.92 mm Mauser caliber was used in large numbers by elements of the German Waffen SS, who did not initially have full access to standard Wehrmacht supply channels.