If you are the owner of a building or property in Arizona that allows public access, and do not wish firearms to be allowed on the premises, you must comply to Arizona's gun sign laws pursuant to A.R.S. section 4-229.
4-229. Licenses; Handguns; Posting of Notice. A. A person with a permit issued pursuant to section 13-3112 may carry a concealed handgun on the premises of a licensee who is an on-sale retailer unless the licensee posts a sign that clearly prohibits the possession of weapons on the licensed premises. The sign shall conform to the following requirements: 1. Be posted in a conspicuous location accessible to the general public and immediately adjacent to the liquor license posted on the licensed premises. 2. Contain a pictogram that shows a firearm within a red circle and a diagonal red line across the firearm. 3. Contain the words, "no firearms allowed pursuant to A.R.S. section 4-229".