You can carry loaded, concealed guns in a park controlled by the National Park Service or a wildlife refuge controlled by the U.S. Fish and Wildlife Service if the state laws where the parks and refuges are located allow concealed firearms — which Arizona does — and you have the proper concealed weapons permit. The rule change, however, does not allow the guns to be taken into federal buildings in the national parks and refuges. A ban remains on hunting and target shooting in national parks.