12.1.2 Handguns
[11-7-11] Handguns and other firearms capable of being concealed on the person are nonmailable unless mailed between the parties listed in 12.1.3 and 12.1.5 after the filing of an affidavit or statement required by 12.1.4 and 12.1.6, and are subject to the following:
a. Firearms meeting the definition of a handgun under 12.1.1b, and the definition of curios or relics under 27 CFR 478.11 may be mailed between curio and relic collectors only when those firearms also meet the definition of an antique firearm under 12.1.1g.
b. Firearms meeting the definition of a handgun under 12.1.1b which are certified by the curator of a municipal, state, or federal museum which exhibits firearms to be curios or relics of museum interest may be accepted for mailing without regard to 12.1.3 through 12.1.6.
c. Air guns that do not fall within the definition of firearm under 12.1.1a that are capable of being concealed on a person are mailable; but must include adult signature service under 503.8.0. Mailers must comply with all applicable state and local regulations.
d. Parts of handguns are mailable, except for handgun frames, receivers or other parts or components regulated under Chapter 44, Title 18, U.S.C.
e. Mailers are also subject to applicable restrictions by governments of a state, territory, or district.