Have a question, on gunbroker it always says " must submit copy of FFL before shipment. But what when the seller is a private seller? I have a couple local stores that handle my transfers, one of them will not send a copy of their FFL to a private seller, they will only do so to another FFL dealer. They said that private sellers don't need a copy and they don't want to send it to private sellers. So why do private sellers demand a copy of the firearm license? Why is it so common that they demand it if it isn't needed?