HI SB401

Prohibits importation and sale of assault rifles, assault shotguns, and .50 caliber firearms in Hawaii effective January 1, 2026, with limited exceptions for licensed dealers and law enforcement.

Allows possession of assault rifles, assault shotguns, and high-capacity detachable magazines (over 10 rounds) if lawfully owned before January 1, 2026, registered by July 1, 2026, and stored in locked containers.

Restricts use of grandfathered assault weapons to private property, licensed firing ranges, sport shooting competitions, licensed repair facilities, and transport between these locations in unloaded, enclosed containers.

Expands definition of "assault pistol" and adds new definitions for "assault rifle," "assault shotgun," ".50 caliber firearm," "detachable magazine," and "fixed magazine" to Hawaii firearms law.

Exempts lawful subsistence hunting by Native Hawaiians and invasive species control activities authorized by the Department of Land and Natural Resources from the assault weapon prohibitions.