One of my worst nightmares come true

[Dennis]

I could be wrong and often am but I doubt ATF would take a report concerning the missing firearm. If they were to do that it would open them up to everybody in the country calling them. The job of taking the report to list the serial number is up to local law enforcement or the postal investigator. John, my unsolicited advice would be to call the post office and ask for the number of their investigator. I would contact the investigator and insist a report be taken and the serial number be listed on computers so the gun can be returned to you if/when it turns up.