The single stack mags are fundamentally different. I wouldnt try it.
My gun is a "dremeled out" SLR101 that was turned into a SAM7. It fits Bulgarian mags perfectly but russians are a teensy bit loose. Polish and Romanian are way too tight and from what I have heard, romanian and polish guns use slightly larger dimensions. Most people have the larger pattern guns (romanians, tantals, etc) so they dont encounter this problem.