I had a PSA AK 556 and it functioned well with my p-mags, the ones with the gray followers but I don't know what gen they were. I never had an issue with it and it ran well, my son has it now and like's it a lot. I also had a Zastava M90 556 for about a year but sold it off, it was a very beautiful well functioning rifle. 2 reasons why I sold it are, I tried 4 different types of brass ammo through it and couldn't get it to group good. It averaged 6" at 100 yards with everything I put through it, and I lose interest real quick in a rifle like that. The 2nd reason was the M90 was heavy with a 1.5mm receiver, I like my AK's light weight, but that's just my personal choice. I recently picked up a PSA 101 and a 102 in 556 and I have been impressed with their function and accuracy and build quality. Lots of options out there for finicky shoppers like me.