AZ has different types of lands, State Trust Lands, National Forest, National Parks, BLM and Private. Shooting of firearms on State Trust are only allowed during hunting season with a TAG. National Forest and BLM are allowed if no structures or towns nearby but you will be held financially responsible if you start a fire. I believe, not sure, shooting Regulations are unique for each National Park. Private is PRIVATE PROPERTY, do not enter or shoot without written permission. In Q the problem is the large number of people wandering around. Just be careful and pickup your casings.
rocmoc n Th Southwest USA/Baja
rocmoc n Great SouthWest USA