36 C.F.R. § 504.14 Weapons and explosives.
Title 36 - Parks, Forests, and Public Property
No person while on the premises shall carry firearms, other dangerous or deadly weapons, or explosives, either openly or concealed, except for official purposes.
Title 36: Parks, Forests, and Public Property
PART 504—RULES AND REGULATIONS GOVERNING SMITHSONIAN INSTITUTION BUILDINGS AND GROUNDS
§ 504.14 Weapons and explosives.