What about calling an ATF Field Office Monday morning? I don't know if you are closer to Newark, NYC or Philly, but here are their numbers:
U.S. Department of Justice
Bureau of Alcohol, Tobacco, Firearms and Explosives
New Jersey Field Division
1 Garret Mountain Plaza
Suite 500
Woodland Park, NJ 07424
Tel: (973) 413-1179
Fax: (973) 413-1190
U.S. Department of Justice
Bureau of Alcohol, Tobacco, Firearms and Explosives
New York Field Division
241 37th Street, 3rd Floor
Brooklyn, NY 11232
Tel: (718) 650-4000
Fax: (718) 650-4001
U.S. Department of Justice
Bureau of Alcohol, Tobacco, Firearms and Explosives
Philadelphia Field Division
The Curtis Center
601 Walnut Street
Suite 1000E
Philadelphia, PA 19106
Tel: (215) 446-7800
Fax: (215) 446-7811