Davey has provided a link to the 4473. I'd suggest downloading it and reading the questions. It's not too hard to determine what's going to be a disqualifier under federal law if you do so.
You'll still have to figure out your state laws, though.
A gunfight is not the time to learn new skills.
If you ever have a real need for more than a couple of magazines, your problem is not a shortage of magazines. It's a shortage of people on your side of the argument. -- Art Eatman