From ATF Form 6:
3. A Federal firearms licensee other than an importer, may make an occasional
importation of sporting firearms or ammunition (excluding surplus military) for
himself or an unlicensed person in the licensee's State, provided that the firearms
and ammunition are intended for personal use of the person for whom imported
and not for resale. ATF Form 6 - Part I (5330.3A) is used to obtain approval for
such importation.