The AK mag might be a Chinese mag. They use the flat back style compared to the ribbed/fin style like European (Commi Countries) use. Does the bottom plate say China on it or is it to rusty?
I just picked up some rusty mags and cleaned them up.
Had my .40 compact for years and have fired over a few hundred rounds through it. Shots smooth to this day. Very accurate! Always keep Good maintenance and cleaning on any gun is always recommended! I'm looking at getting another one