NFA Form 1 Firearm/Suppressor Marking:

We offer NFA engraving while you wait. Purchase the service, send us an email with the information to be engraved and we'll set up an appointment for you to come by.   ATF Marking Requirements: The National Firearms Act (NFA) stipulates that any item added to the registry be properly marked by the manufacturer, as are the markings required on firearms. The serial number must be marked to a minimum depth of .003" and no smaller than 1/16".  The required markings are Name (Trust Name), City/State, Model, Caliber, and Serial number.