27 CFR § 478.112 - Importation by a licensed importer.
(a) No firearm, firearm barrel, or ammunition shall be imported or brought into the United States by a licensed importer (as defined in § 478.11) unless the Director has authorized the importation of the firearm, firearm barrel, or ammunition.
(1) An application for a permit, ATF Form 6 - Part I, to import or bring a firearm, firearm barrel, or ammunition into the United States or a possession thereof under this section must be filed, in triplicate, with the Director. The application must be signed and dated and must contain the information requested on the form, including:
(i) The name, address, telephone number, and license number (including expiration date) of the importer;
(iii) The name and address of the foreign seller and foreign shipper;
(A) The name and address of the manufacturer;
(C) The caliber, gauge, or size;
(D) The model;
(F) The overall length, if a firearm (in inches);
(G) The serial number, if known;
(H) Whether the firearm is new or used;
(I) The quantity;
(vi) Verification that if a firearm, it will be identified as required by this part; and
(C) If an unserviceable firearm (other than a machine gun) being imported as a curio or museum piece, a description of how it was rendered unserviceable and an explanation of why it is a curio or museum piece; or
(D) If a firearm other than a surplus military firearm, of a type that does not fall within the definition of a firearm under section 5845(a) of the Internal Revenue Code of 1986, and is for sporting purposes, an explanation of why the firearm is generally recognized as particularly suitable for or readily adaptable to sporting purposes; or
(i) If the Director approves the application, such approved application will serve as the permit to import the firearm, firearm barrel, or ammunition described therein, and importation of such firearms, firearm barrels, or ammunition may continue to be made by the licensed importer under the approved application (permit) during the period specified thereon. The Director will furnish the approved application (permit) to the applicant and retain two copies thereof for administrative use.
(c) A firearm, firearm barrel, or ammunition imported or brought into the United States or a possession thereof under the provisions of this section by a licensed importer may be released from Customs custody to the licensed importer upon showing that the importer has obtained a permit from the Director for the importation of the firearm, firearm barrel, or ammunition to be released. The importer will also submit to Customs a copy of the export license authorizing the export of the firearm, firearm barrel, or ammunition from the exporting country. If the exporting country does not require issuance of an export license, the importer must submit a certification, under penalty of perjury, to that effect.
(1) In obtaining the release from Customs custody of a firearm, firearm barrel, or ammunition authorized by this section to be imported through the use of a permit, the licensed importer will prepare ATF Form 6A, in duplicate, and furnish the original ATF Form 6A to the Customs officer releasing the firearm, firearm barrel, or ammunition. The Customs officer will, after certification, forward the ATF Form 6A to the address specified on the form.
(2) The ATF Form 6A must contain the information requested on the form, including:
(i) The name, address, and license number of the importer;
(iii) The country of manufacture;
(iv) The type;
(v) The model;
(vi) The caliber, gauge, or size;
(vii) The serial number in the case of firearms, if known; and
(d) Within 15 days of the date of release from Customs custody, the licensed importer must:
(1) Forward to the address specified on the form a copy of ATF Form 6A on which must be reported any error or discrepancy appearing on the ATF Form 6A certified by Customs and serial numbers if not previously provided on ATF Form 6A;