Never forget that those laws produced nothing more than non-compliance, much the same as NY encountered with it's attempt to outlaw everything.
The idiots that did comply were fools. The state said they would not share that info with local police, but I know for a fact that local dispatchers all had "registered" owners pop up on their computers if that person's name was run for anything.
Yeah, I'm still a little suspicious of that "national firearm registry" that doesn't exist.
In NC, my sister was being a b**ch and called the cops because we were having an argument over her spending our mother's money.
One of the 2 Cops that arrived asked me, "Where do you have your firearm?"
I asked point blank, "How would you know if I own firearms?"
He stammered a little and said, "Well, maybe your sister said you own guns when she called."
Seemed rather fishy then, and it's not gotten any better over the years. Somehow he KNEW I owned guns. They were all in Hawaii, so there's no reason my sister would have told the Cops I have a gun. Of course, she's bi-polar, so there's no telling what she told the dispatcher.
That incident proved to me that there's information about firearms owners being shared among state policing agencies. It would not surprise me to learn that Hawaii makes our registration info available to LE nationwide. Once a government agency gets your info, they act like they own it.