There were also some SKS variants manufactured to accept detachable AK mags. I had one with a barely leagal 16 & 1/2 in barrel. Bought it new in 1990 or 91 for around $230. It was absolutely the funnest guns I've owwned until it was stolen. Of course it was never recovered. Sure would like to have another one.
I remember the good old days when you could buy a case of five SKS for $99 per gun. The wood Chinese crate was hella cool.