The laws governing the legal use, storage and carrying of firearms are constantly changing. Below are the applicable laws in the State of  as of 4/10/2013. The below information is designed to be a guide and not the final word. If you have specific questions, please refer to the State of HAwaii legislation at capitol.hawaii.gov. Another great resource is the Honolulu Police Department.

§134-23 Place to keep loaded firearms other than pistols and revolvers; penalty. 
(a)  Except as provided in section 134-5, all firearms shall be confined to the possessor's place of business, residence, or sojourn; provided that it shall be lawful to carry unloaded firearms in an enclosed container from the place of purchase to the purchaser's place of business, residence, or sojourn, or between these places upon change of place of business, residence, or sojourn, or between these places and the following:
(1)  A place of repair;
(2)  A target range;
(3)  A licensed dealer's place of business;
(4)  An organized, scheduled firearms show or exhibit;
(5)  A place of formal hunter or firearm use training or instruction; or
(6)  A police station.

"Enclosed container" means a rigidly constructed receptacle, or a commercially manufactured gun case, or the equivalent thereof that completely encloses the firearm.

(b)  Any person violating this section by carrying or possessing a loaded firearm other than a pistol or revolver shall be guilty of a class B felony.

§134-25] Place to keep pistol or revolver; penalty. 
(a)  Except as provided in sections 134-5 and 134-9, all firearms shall be confined to the possessor's place of business, residence, or sojourn; provided that it shall be lawful to carry unloaded firearms in an enclosed container from the place of purchase to the purchaser's place of business, residence, or sojourn, or between these places upon change of place of business, residence, or sojourn, or between these places and the following:
(1)  A place of repair;
(2)  A target range;
(3)  A licensed dealer's place of business;
(4)  An organized, scheduled firearms show or exhibit;
(5)  A place of formal hunter or firearm use training or instruction; or
(6)  A police station.

"Enclosed container" means a rigidly constructed receptacle, or a commercially manufactured gun case, or the equivalent thereof that completely encloses the firearm.

(b)  Any person violating this section by carrying or possessing a loaded or unloaded pistol or revolver shall be guilty of a class B felony.

§134-26  Carrying or possessing a loaded firearm on a public highway; penalty. 
(a)  It shall be unlawful for any person on any public highway to carry on the person, or to have in the person's possession, or to carry in a vehicle any firearm loaded with ammunition; provided that this section shall not apply to any person who has in the person's possession or carries a pistol or revolver in accordance with a license issued as provided in section 134-9.
(b)  Any vehicle used in the commission of an offense under this section shall be forfeited to the State, subject to the notice and hearing requirements of chapter 712A.
(c)  Any person violating this section shall be guilty of a class B felony.

§134-51  Deadly weapons; prohibitions; penalty. 
(a)  Any person, not authorized by law, who carries concealed upon the person's self or within any vehicle used or occupied by the person or who is found armed with any dirk, dagger, blackjack, slug shot, billy, metal knuckles, pistol, or other deadly or dangerous weapon shall be guilty of a misdemeanor and may be immediately arrested without warrant by any sheriff, police officer, or other officer or person.  Any weapon, above enumerated, upon conviction of the one carrying or possessing it under this section, shall be summarily destroyed by the chief of police or sheriff.
(b)  Whoever knowingly possesses or intentionally uses or threatens to use a deadly or dangerous weapon while engaged in the commission of a crime shall be guilty of a class C felony.