The Gast gun was a German twin barrelled machine gun that was developed by Karl Gast of Vorwerk und Companie of Barmen and used during the First World War. Its unique operating system produced a very high rate of fire of 1,600 rounds per minute. The same principle was later used as the basis for the widely used Gryazev-Shipunov GSh-23L series of Russian aircraft autocannon.

Vorwerk & Co. KG, trading as Vorwerk, is an international diversified corporate group headquartered in Wuppertal, Germany. Vorwerk was founded in 1883. The main business is the direct distribution of various products like household appliances such as Thermomix, a kitchen appliance, and Kobold vacuum cleaners, fitted kitchens and cosmetics.