I do know that there were a few green bulgarian Waffle mags. However, there more Finnish Valmet/Sako 92 green waffle mags than there were Bulgarian and this is probably what you have seen. BTW, if it has a little D ring on it it is definitely Finnish, however, if it does not, it might still be Finnish. finland made them both ways but nobody made them with the D ring but Finland.
Tsh77769