I guess that would depend upon what the lawmakers of Hawaii’s goal is. If they are out to do what was done in Australia, then I guess they’d try and take those weapons from those who legally own them. Given that possibility, I’d say that people should start a campaign to stop that from happening.
I'd say that's a pretty good guess. It's what happened in NYC. In '76 the NYC govt required that semiautos be registered. The under the despicable David Dinkins (less liberal than Obama) declared the guns contraband and those who didn't give evidence to the NYC NKVD that they had disposed of the guns were arrested and their property seized.