Actually if you think about things the other way.
Before 1934 you could walk in to any butcher, baker or candlestick maker and by a gun, whatever gun they had in stock... no check nothing.
Then came the original NFA which added $200 tax and some other stuff.
Over time gun sales through dealers have been regulated and restricted, one inch at a time. Up to the Brady Laws, and the current NICS. Pick up a shotgun in 10 minutes, but a handgun takes 5 days, because obviously a handgun is far more dangerous than a 12 gauge pump action and We've been conditioned to accept this as normal.
The ONLY place that gun sales still exist like they did before all the restrictions is private sales. Then people wonder why they want to eliminate that. Its my property, why do I need to anything if I want to sell it? If I want to sell a knife I don't need to get an ok from the police, FBI or anyone, knives kill too, so do sharp sticks, ladders, etc.
I think thats whats scariest about this is that we're all so conditioned to say oh, yeah the gun show loophole lets try to come up with a solution before it's a solution that is placed on us. I'm pretty sure that back in '94 and '86 there were people thinking that something was inevitable and wanted to suggest something before this came to be. The same in '68, and likely the same in '34.
There must come a time when reasonable people who are acting lawfully need to say no. No you will not take my right. No you will not take my property. No you will not take my firearms, or my ammunition, or my rights to them.
"The Right of the people, to keep and bear Arms, SHALL NOT BE INFRINGED" There is not a qualification of, oh but we didn't mean by tax, or a 5 day cooling off period, or only certain types of weapons, but not full-auto, or rifles that are black, or over a certain caliber.
The Amendment is clear, maybe it's time we stood up and said, Infringement is infringement, these all infringe my right.