Not directly sold by Hungary, probably. Could still be sold through front companies or other third parties. As for the Caribbean region, I always figured that the Sandinsta regime in Nicaragua could have first obtained the rifles, then decided to share a few with their guerrilla friends in Salvador.Thanks, I know those books. The problem has had no sources listed in relation to the Hungarian AKMs. This could be coming from other countries, not directly sold by Hungary. I found nothing in the archives about that. It estimated 11,000 Hungarian AKMs received in the Caribbean region, but only a few shown in photos or even captured.
Based on the records, Hungary sold 7000 pcs older AK-55 to Cuba through a German company based on Duesseldorf named, Comex Eisen und Stahl GmbH in 1968. Nothing in 1969, then between 1970-1980 21800 pcs AK-55, 12000 pcs AMD-65 sold through various companies. But no AKM-63 listed.