123.17 Exports of firearms, ammunition, and personal protective gear.
(a) Except as provided in § 126.1 of this subchapter, Port Directors of U.S. Customs and Border Protection shall permit the export without a license of components and parts for Category I(a) firearms, except barrels, cylinders, receivers (frames) or complete breech mechanisms when the total value does not exceed $500 wholesale in any transaction.
123.17(e) Port Directors of U.S. Customs and Border Protection shall permit U.S. persons to export without a license ammunition for nonautomatic firearms referred to in paragraph (a) of this section if the quantity does not exceed 1,000 cartridges (or rounds) in any shipment. The ammunition must also be for personal use and not for resale or other transfer of ownership. The foregoing exemption is also not applicable to the personnel referred to in § 123.18.
That is quoted directly from the ITAR where I was directed by someone in the know. So FYI.