OK, now I'm confused again.
Let's say I go to my LGS or one of the reputable on-line dealers and buy a WASR (since that's the look I like). I can assume it's 922r compliant, right? I don't need to do anything else to it, right?
I don't understand what you mean about using American magazines. If I buy extra magazines and they are made in America, I have to change out other parts? That doesn't make sense. I could understand (but not necessarily agree with) the logic if I was to buy a non-American magazine. What am I missing?
The WASR is already compliant when you buy it from the store, because another company converts it when it comes into the country (it already has American parts in it).
Magazines count as 3 compliance parts when inserted. Therefore, if it's a foreign magazine, it would be 3 parts against the rifles compliance, however with an American magazine, it counts as 3 parts towards 922r compliance.
This is important for some people because sometimes they only switch out a couple parts, then use American mags to make their rifle compliant. In this case, using foreign mags would cause the American-made parts count to drop to low, and make the rifle non compliant.
The WASR is set up so that you can use either foreign mags or American mags and still be legal, so no worries there.
Now here's the kicker for the last part of your question. If you were to buy a Saiga (100% Russian) and put an American magazine into it (3 American parts), you would have an illegal gun.
The reason WHY it would be illegal is because since you aren't using 100% foreign parts on your gun, you also don't have enough American parts on the gun to compensate for the mags. Basically in a nutshell, the gun either needs to be:
A) 100% Foreign
B) Less than 10 Foreign parts
Having a gun with 11 foreign and 5 American parts is illegal.
Having a gun with 300 foreign and 1 American parts is illegal.
Having a gun with 10, 9, 8, 7... foreign parts and 1, 2, 3, 4+ American parts is LEGAL, BECAUSE its less than 10 foreign plus additional American parts.
And you wonder where all of your taxpayer money goes