DISA (company)  DISA is a company founded in Denmark (with the name Compagnie Madsen A/S) which since 1900 has produced metal casting products. In 1936 it changed name from Dansk Rekyl Riffel Syndikat A/S to Dansk Industri Syndikat A/S and was a defence manufacturer most notable for producing the Madsen machine gun and Madsen M-50.