Its purpose is to make gun ownership such a hassle to keep in compliance with a myriad of laws, and such a risk of becoming a felon by accident or oversight, that people just quit buying or owning them.
The first quote on my FR profile page applies here.
“Did you really think we want those laws observed?” said Dr. Ferris. “We want them to be broken. You’d better get it straight that it’s not a bunch of boy scouts you’re up against... We’re after power and we mean it... There’s no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren’t enough criminals one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws. Who wants a nation of law-abiding citizens? What’s there in that for anyone? But just pass the kind of laws that can neither be observed nor enforced or objectively interpreted and you create a nation of law-breakers and then you cash in on guilt. Now that’s the system, Mr. Reardon, that’s the game, and once you understand it, you’ll be much easier to deal with.”
- Ayn Rand, ‘Atlas Shrugged’ 1957