Hey Pat;
Nice AK. Always heard good things about the Nodak Spud receivers. As Phos32 said, it depends on the builder. Check your rivets when you get it in hand.
That mag reminds me of the Weiger mags that were used on the early Romanian SAR-3 5.56mm guns. Does it have the two buttons on the floorplate of the mag? They're harder to find and a bit pricey, but work good. I'm not aware of any actual Yugo-made 5.56 mags but I get educated just about every day.
The Chinese 5.56 mags rarely interchange with anything other than the Chinese guns. Not sure what the differences are but many tried and failed. I don't like altering receivers or expensive mags to "make 'em work". Just my opinion.
firstchoice