HRS §134-71
Police keep other powers
This section says that police can still take guns or ammunition from someone if they have other legal authority to do so. It does not change any other laws that allow removal. This is a narrow rule about police powers.
everyone
The statute, as written — Law enforcement to retain other authority
The provisions of this part shall not affect the ability of a law enforcement officer to remove firearms or ammunition from any person pursuant to other lawful authority.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.