As soon as you discover that your NFA firearm was lost or stolen, you must notify your local NFA branch office of the circumstances by providing the following information:
- The name and address of the person to whom the firearm is registered;
- The lost or stolen firearm, including the model, manufacturer, caliber or gauge, and serial number; and
- The date and place of the theft or loss, including details of the situation.
This report must be made within 48 hours of discover. In addition, you must notify your local law enforcement authorities within 48 hours of discovery.
You may call the ATF at our 24-hour, 7-day-a-week, toll-free hot line number, 1-800-800-3855.
In addition, you must also file an ATF Form 3310.11 (Federal Firearms Licensee Theft/ Loss Report) within 48 hours.
If you are a Licensee, you should provide their license number.