Question: Is it legal to carry a small knife in one's pocket? Are switchblade knives illegal in Arizona?
Answer: Arizona Law addresses these questions in ARS chapter 31, section 13. First, Arizona law (ARS 13-3101) defines deadly weapon as anything that is designed for lethal use. Second, ARS 13-3102 states that a person commits misconduct involving weapons if they carry a deadly weapon without a permit, except for a pocket knife concealed on his or her person. So, the answer to the first question is that it is legal to carry a pocket knife concealed on your person.
As to the matter of switchblade knives, there is nothing specifically making switchblade knives illegal in this state. As they are not commonly carried by sportsman or tradespersons, they would probably be considered fighting knives and, therefore, deadly weapons. While not specifically illegal to possess, they may have to be either carried visibly or, if concealed, the possessor must have a concealed weapons permit issued pursuant to ARS 13-3112.