Basically, there are 2 ways that an individual (who is not prohibited by Federal, State, or local law from receiving or possessing firearms) may legally acquire NFA firearms:
By transfer after approval by ATF of a registered weapon from its lawful owner residing in the same State as the transferee.
By obtaining prior approval from ATF to make NFA firearms.
[27 CFR 479.62-66 and 479.84-86 ]
In addition, a Corporation, LLC, or Firearms Trust may acquire NFA Firearms that are nor prohibited by Federal, State, or local law.
To create a NFA Trust Contact a Gun Trust Lawyer®