Background checks that they stick in a database permanently and that specifies exactly what you are buying, is backdoor registration.
That already exists, so are you going to skip buying a firearm or buy one under the table? I guess I am past worrying about background checks, they are here to stay and having previously worked at an FFL, they do work. People that shouldn’t have a firearm (e.g., felons), should be stopped. What is missing from the equation is that people are not prosecututed for trying to purchase firearms illegally.