AZ HB2288

Prohibits political subdivisions from suing firearm manufacturers, distributors, dealers, or importers for harm caused by third-party misuse of nondefective firearms or ammunition.

Removes a provision requiring operators of public establishments and event sponsors to store weapons and implement procedures for weapon storage upon request; repeals the related statute (13-3102.01).

Establishes state preemption over firearm regulation by prohibiting state and local agencies from enacting ordinances or rules restricting transportation, possession, carrying, sale, transfer, purchase, licensing, or registration of firearms and ammunition except in limited circumstances (taxes, minor possession restrictions, land regulation, park discharge limitations, and secured facilities with proper signage and lockers).

Adds exceptions allowing political subdivisions to regulate firearm possession on secured public facilities if conspicuous signs are posted and secure firearm lockers are available in reasonable proximity to main entrances with immediate retrieval capability.

Updates references in sections addressing misconduct involving weapons, armed nuclear security guard authority, and school reporting requirements to reflect the removal of the weapon storage provision.