It’s important to call things what they are. I know of magazine capacity laws written so poorly they dont even touch belt fed weapons and for the low low price of 1500 bucks you can convert the AR you already have into a belt fed weapon and constantly fire rounds until you run out of belt or the guns melts. And that’s just a part called the upper reciever which legally is not a gun. You can get it shipped online no questions asked, no checks required. Knowing what you’re talking about makes a difference. This is how loopholes get made.