If you are creating the firearm yourself, such as a silencer or a short barreled rifle (when finishing a receiver that is not yet a firearm), there is no original manufacturer. Because of the large number of makers (which includes filings by trusts), we do not issue a specific code to each maker. Instead, we use a generic code of FMI to denote a Form 1 registration. Thus, when submitting an eForm 1 where there is no original manufacturer, on the line item screen, a window for the entry of manufacturer is opened after clicking the Add Firearm button. At this point, the applicant should click the “By Manufacturer Code’ button and enter FMI as the manufacturer code and click Verify. The applicant will then select the United States as the country of manufacture and proceed to the description screen. Please note that ‘FORM 1 REGISTRATION’ will appear as the name of the maker on the PDF of the eForm 1. Again, the applicant is the maker and registrant for purposes of the NFA and must mark the firearm.