HansGruber
Ronin
Little more than that; if I take my Z5–which was sold as a complete firearm, and a pistol—and convert it to a SBR by putting a stock on it, I am the manufacturer of the SBR, and have to put my manufacturing information on it—name, city, state...for example, if I do it as an individual, it would be “Hans Gruber, East Bumfrick, MN”. This has to engraved to a certain depth and be a certain size...and must be engraved, not stamped. I can still use the original S/N, though.If you make an item yourself, homemade suppressor, a fabbed lower with no serial number, you are required to engrave a serial number -identifier on it that the ATF approves with your tax stamp.
Ex: if i build a homemade suppressor and want to legally use it, I have to Form 1 with ATF and provide a serial number and when they approve it, i engrave that on the item