"Actually the NRA is pushing for rigorous enforcement of the 20,000 or so gun laws already on the books" - so why do oppose the kind of minimal gun control measures they do appear to oppose?

What's wrong with making people wait a reasonable time before they can buy a gun, and providing some kind of proof that they are sane and responsible and competant?

People who value gun ownership should be all in favour of making gun control as rigorous as possible, and making it difficult to join the gun owning elite. To give a daft analogy, if musical instruments could kill people, wouldn't we be all in favour of those kind of rules to cut down the danger of them being misused? Would we think that people who opposed such controls were friends of music?

Why don't sensible people who value the right to own guns tell the NRA to get off their backs?