Are the FFL's sending the gun between each other or are they handling the transaction for two individuals? (example: Person A, a Michigan resident, selling to Person B, an Indiana Resident. Person A goes to a local FFL who ships to a FFL in Indiana) Note: the USS does not apply to sales of goods between individuals so the answer to the question above depends on the legal status of the buyer and the seller.

Around the steel no tortured worm shall twine.