Has anyone ever seen a pre-ban M12-S?

Ive shot military M12S in Belgium and France but never even seen a parts kit in this country.

I am also looking at an Andrewski built Sterling and M45 Carl Gustaf, both of which also have a low cyclic rate and are easy to shoot, but would rather have a M12S.

I suspect they are dealer sample only.

Thanks for any feed back.

PS These are my favorite buzz guns. Also like the pps-43 (not ppSh41). In modern guns, the Calico. All controllable. Lots of hits per burst.

Andy