im 15 in arizona and was wandering if it is legal to carry a airsoft gun, an airsoft gun is a gun that uses yellow plastic bb's and is sping loaded with an orange barrel,that is not concealed or loaded and is in a holster and not consealed and/or a knife that is 8 inches that is an a holster,and not consealed, just to scare away predaters?

Arizona Law (A.R.S. § 13-3111) states that a minor cannot carry a firearm unless under the supervision of an adult. Technically a spring loaded gun is not considered a firearm. There may be local city ordances regarding these types of guns, so it would be a good idea to check with the authorities in your area.

The largest knife you could legally carry is a pocket knife (A.R.S. § 13-3102), anything larger you need a permit for, and you can't get that permit until you are an adult.

You also have to remember that you can't carry any type of weapon onto school grounds.