Why wont it work, I used to run those POS's until I bought a Tapco 20 rounder....then I got fed up with all the detachable mag BS and put the factory fixed 10 rounder in. NEVER had another problem. And they reload about 100 faster too, lol.
But seriously, it will work. It will just be a little wobbly.
Also, hey....I see in your siggy there that you have a Yugo. Take your gas tube into your local auto parts store or hardware store. Find you an O-ring that will fit down in the end that bells out there. It will cycle faster and increase reliability.
Cheap chinese metal flea market mags are crap, get the 20 round tapco's these are the best option. The only metal mags that work are USA Brand Mags or DC Mags, I have heard the mags being made now on the USA tooling work as well.