The provisions of this regulation apply to all military personnel, units,
organizations, activities, facilities, and offices, which are assigned, attached, or
otherwise supported by Fort Sill. This regulation also applies to all persons living,
working, traveling, or otherwise located upon Fort Sill. Violations of this regulation by
military personnel may subject offenders to disciplinary action under the Uniform Code
of Military Justice and/or administrative action as deemed appropriate by the
commander. However, this regulation is not intended to preclude possible prosecution
of military personnel for violations of state or federal laws or other regulations, when
applicable. Any violation of this regulation by family members, civilian employees, or
other civilians while on this installation may subject the offender to administrative action
and/or criminal prosecution under applicable state and federal laws and regulations.
These actions may include, but are not limited to, loss of privileges and debarment from
post. These provisions do not apply to law enforcement personnel while in the
execution of their duties.
It seems to me that with no federal statute prohibiting a civilian from bringing a firearm on base, there would be no penalty for the civilian if he were to do so, unless, of course, a federal trespassing statute is violated.
The term “Federal facility” means a building or part thereof owned or leased by the Federal Government, where Federal employees are regularly present for the purpose of performing their official duties.
38 C.F.R. § 1.218
Weapons and explosives. No person while on property shall carry firearms, other dangerous or deadly weapons, or explosives, either openly or concealed, except for official purposes.
I cannot find anything similar that covers unauthorized firearms on military property exclusive of buildings.39 CFR 232.1 (k)(1)
Weapons and explosives. Notwithstanding the provisions of any
other law, rule or regulation, no person while on postal property may
carry firearms, other dangerous or deadly weapons, or explosives, either
openly or concealed, or store the same on postal property, except for
official purposes.
Sec. 930. Possession of firearms and dangerous weapons in Federal
facilities
-STATUTE-
(a) Except as provided in subsection (d), whoever knowingly
possesses or causes to be present a firearm or other dangerous
weapon in a Federal facility (other than a Federal court facility),
or attempts to do so, shall be fined under this title or imprisoned
not more than 1 year, or both.
(d) Subsection (a) shall not apply to -
(3) the lawful carrying of firearms or other dangerous weapons
in a Federal facility incident to hunting or other lawful
purposes.
no person shall be convicted of an offense under
subsection (a) or (e) with respect to a Federal facility if such
notice is not so posted at such facility, unless such person had
actual notice of subsection (a) or (e), as the case may be.
So, notice is required, either via signage or verifiable notification.
(c) The provisions of Subsections 76-10-504(1) and (2), and Section 76-10-505 do not apply to a person issued a permit under Subsection (1)(a).