If you live outside the US and wish to sell an item on GunBroker.com to a US resident, the item will need to be legally imported into the US. Any Federal Firearms License (FFL) holder can import a firearm for personal use or on behalf of an unlicensed person by filling out the proper paperwork. According to the ATF:
(L1) May a licensed dealer who does not have an importer's license make an occasional importation?
Yes. A licensee may make an occasional importation of a firearm for a nonlicensee or for the licensee's personal use (not for resale). The licensee must first submit a ATF Form 6, Part I to the Imports Branch for approval. The licensee may then present the approved Form 6 and completed ATF Form 6A to the U.S. Customs Service. Contact the Bureau of ATF, Imports Branch, Washington, DC 20226, (202) 927-8320 for forms.
There are a great many items that cannot be imported into the US. These include 'armor piercing' ammo, high-capacity magazines, and so-called 'assault weapons'. Please contact your FFL to make import arrangements and verify the legality of the item you are attempting to import before placing a bid on an item.
If the item is not a firearm (such as scopes, holsters, etc.) then the item can be sent into the US without any special importation procedure other than filling out a standard US Customs form.
There is a great deal of additional information on the ATF web site at:
www.atf.treas.gov/firearms/index.htmIf you are a seller located outside the US, please clearly state that the item resides outside the US and include a link to this page in your item listing. This will help prevent problems with your buyers.