In order to transport weapons through NPS areas they must be dismantled and adequately cased or packed in such a way as to prevent their use.
Loaded weapons are subject to confiscation by park authorities.
Following is a reprint from the Code of Federal Regulations, Title 36 - Parks, Forests, and Public Property. It is Section 2.4 Weapons, Traps and Nets. 2.4 Weapons, traps and nets. The taking of wildlife is authorized by law in accordance with Sec. The taking of fish is authorized by law in accordance with Sec.