ATF Form 3310.4 must be completed in triplicate (3 copies). The original is sent to ATF’s National Tracing Center by fax at 1–877–283–0288, by email at MultipleHandgunSalesForms@atf.gov, or by mail to:

U.S. Department of Justice
Bureau of Alcohol, Tobacco, Firearms and Explosives
National Tracing Center
P.O. Box 0279
Kearneysville, WV 25430–0279

A copy is to be sent to the designated state police or the local law enforcement agency in the jurisdiction where the sale took place. The remaining copy is to be attached to the corresponding ATF Form 4473 and retained in the licensee’s records for a period of not less than 5 years.

[27 CFR 478.126a and 478.129]