27 CFR 478.45: Renewal of license.

If a licensee intends to continue the business or activity described on a license issued under this part during any portion of the ensuing year, the licensee shall, unless otherwise notified in writing by the Chief, Federal Firearms Licensing Center, execute and file with ATF prior to the expiration of the license an application for a license renewal, ATF Form 8 Part II, in accordance with the instructions on the form, and the required fee. If the applicant is an alien who has been admitted to the United States under a nonimmigrant visa, the application must include applicable documentation demonstrating that the alien falls within an exception specified in 18 U.S.C. 922(y)(2) (e.g., a hunting license or permit lawfully issued in the United States) or has obtained a waiver as specified in 18 U.S.C. 922(y)(3). The Chief, Federal Firearms Licensing Center may, in writing, require the applicant for license renewal to also file completed ATF Form 7 or ATF Form 7CR in the manner required by § 478.44. In the event the licensee does not timely file an ATF Form 8 Part II, the licensee must file an ATF Form 7 or ATF Form 7CR as required by § 478.44, and obtain the required license before continuing business or collecting activity. If an ATF Form 8 Part II is not timely received through the mails, the licensee should so notify the Chief, Federal Firearms Licensing Center.