I've got the GSG AK and GSG 522. Agree, the AK is fun because of it's uniqueness ALSO, they seem to make good stuff. Only downside on the AK is lack of windage adjustment although the STG44-22 sights will fit the AK. Unfortunately I ordered a set from ATI 5 months ago and still waiting for them...
Just checked--out of stock (almost as bad as ammo).
Here's a place that has 35 round mags in stock. I've got two of these. They're OK as long as you also order the load assist handle.
Plinker Tactical :: Magazines