On what authority? If I were a gun owner - I would sue because my privacy rights had been violated.
Would you still sue if it were your little girls that had been murdered?
That’s what I thought.
I don't know of any laws requiring gun dealers to keep your gun purchases confidential. It's usually bad for business to tell people what one of your customers bought without good reason, but I don't think it's illegal.
I wouldn't think the gun dealers would be required to release the information of who bought a particular type of gun without a court order, but I really don't know.
I'm pretty sure that there is no enumerated right to not have another private individual reveal what they sold to you.
“On what authority? “
If you are an FFL, the government can inspect your 4474 books any time, you cannot say no.