Going based on what is written, If you "move a firearm out of the state" for longer than 5 days they probably consider it permanent. Otherwise this law is unenforceable, because you can just say you planned to return it to the state at some point in time. When they issue the civil penalty, the firearm owner wont be the one deciding any of that. And I doubt anyone will be hiring a lawyer to fight a $100 dollar fine.
Incorrect. The word "permanent" has a plain language meaning.
If you travel to the mainland for 3 weeks and return to Hawaii, all while transporting a firearm, you're not required to notify anyone -- other than the airlines.
They look at the situation to see if it was a permanent out-of-state move for you and the the weapon. If you vacated your Hawaii residence, if you moved the weapons by including them in your household goods with a moving company, if you quit your job .... all these examples point to a
permanent relocation out of state.
The time limit starts either when you leave the state for good or the firearm is taken out of state for good -- permanently, not temporarily.
You might ship the firearm/s to a person out of state ahead of leaving yourself, but you would still have up to 5 days from the day you left permanently to notify them. Also, if you leave your stuff in storage, and you've been living on the mainland for 6 months looking for work and a new place to live, five days after your goods leave Hawaii starts the 5-day clock.
It's not complicated.