What FFL license is required to accept other Handgun Frames?

[Nickalapokis]

Im getting into stippling on the side and was wondering what the process is to become an FFL so I can receive customer frames without them having to be present for the stippling?

I know it's going to require time and money, just not sure on the exact path to take.

Thank you for looking and or reading.

[audiophil2]

gunsmithing 01
if oyu plan to alter guns first and then sell 07