I sent a double off recently to Mr. Orlen. I just mailed it off. Sent a shotgun to Galzan, same thing. Recognized names can get your gun stolen, so you don't want to put any recognition on the shipping label.

I didn't have a copy of either's FFL. I once shipped a rifle to a C&R collector in Alaska, and DID enclose a copy of his C&R license. It can't hurt, but ultimately, ATF is going to go to the reciever, if they get involved at all.