Great design, thirteen round magazine, unless you got some thirty round stick back in the day and a hell of a lot of fun to shoot. I have had both Belgian and Hungarian FEG clone and there is no difference between the two.
Does the Hungarian have the magazine safety? I handled one that didn't and was wondering if it was all of them. Argentina has 17 round mags, for what it's worth. I think the Hungarian guns started out on Nazi-captured Belgian tooling which was move to Hungary to avoid Allied bombers.