Weapon laws (Title 13, Ch. 31 ARS)
Arizona does not have purchase permits, gun registration, or gun-owner licensing. There is no waiting period mandated for firearm purchases and private gun sales are legal. Arizona is a constitutional carry state; permits are not required to carry concealed in most places. Concealed weapon permits (CCW) are-shall issue, all US permits are recognized, and loaded open carry is allowed (with some exceptions).
Constitutional Carry (Permitless concealed carry)
Anyone over 21 may legally carry a concealed firearm without a concealed weapon permit. This applies to residents and non-residents alike. You may not carrying a firea
Firearms are prohibited in polling place on election day, a nuclear or hydroelectric power plant (13-1302), detention facilities(including the parking lot) (31-129, 13-2505, 13-2514), or the secure areas of airports (13-3119).
Public buildings that are posted with "no guns" signs or otherwise require you to disarm (13-1302) must provide safe storage pursuant to 13-3202.01. There is no exception for concealed weapon permittees. Sadly, Arizona government does not understand that the safest place for a gun is its holster and increased firearm
No guns signs
You may not enter any "public establishment" (public buildings) or a public event carrying a firearm after a "reasonable request" by the operator not to (13-1302). Storage, usually lockers, must be provided (13-3202.01) This does not apply to private property unless they serve alcohol on-site (see below).
Firearms are prohibited in polling place on election day (13-1302). If the polling place is at a more restricted location, such as a school, the prohibition may be year round.
You cannot consume alcohol at an establishment that serves alcohol, you cannot possess a firearm on the premises, and signs have the force of law even for concealed weapon permittees. Without properly posted signs, a permittee can carry concealed. 4-229 and 4-244
Only legal when unloaded and remains in a vehicle under the control of an adult and if the vehicle is unattended, the vehicle is locked and firearm is out of sight. Firearms used for approved school programs and possessed by off-duty and retired peace officers under LEOSA is also legal. 13-1302
Campus carry (college/universities)
There are no specific laws prohibiting firearms on college or university campuses, however, individual campuses may have their own policies regarding firearms.
Employee protection/parking lots
Generally, a property owner, tenant, public or private employer or business cannot prohibit a person from lawfully transporting or storing a firearm in a locked vehicle out-of-sight. 12-781
No firearms in any airport secure area located beyond the main area where the public generally buys tickets, checks and retrieves luggage. This is past the TSA security checkpoints. 13-3119