I will still not deal with Quantico Tactical in the feature based on a dealing that is going on right now. I had a revolver listed on GB and the winning bidder chose to use these guys for his FFL. They would not send me a copy of there FFL and wanted my FFL to contact them and send them a copy of his FFL for "verrification" before they would send theres to him. Again stating that it was "store policy", I think its BS and silly, been selling online for over 5 years now and never had an issue until now. I hope the OP gets his issues worked out and post some pics online so we can see his side of the story. It only takes a few minutes to snap a pic and post it.
Although your post is somewhat confusing, my comments are based upon the fact that I take from your post that you do not have an FFL of your own despite "selling online for over 5 years." I take it from that statement that you are regularly engaging in buying and selling guns, perhaps through some FFL dealer near where you live. (Have you read the definition of what constitutes engaging in the firearms business without an FFL and what happens when you do that?)
What right do you have, whether or not you have your own FFL, to tell an FFL whom you want to do you a favor and receive a shipment from you or your FFL guy, how to do its business?
If you want to play gun dealer without going through the regulation, etc., that a real dealer goes through, then play nice since the receiving FFL has a right to tell you to shove off.
Whether or not QT wants to receive a shipment from you so that you can make a profit from a direct sale while QT has to deal with the 4473 and the NICS check, the log in and log out process and the receipt, unpacking, checking and so forth that goes along with receiving a gun for a customer is entirely within their discretion.
It is not a requirement for any FFL to do these transfers, and quite frankly, if I had someone like you trying to shame me on a public forum into changing my system to do you a favor, I would nicely tell you where to get off.
Sorry, but that needed to be said, as you are violating various rules of good taste by publicly whining about QT without good cause.
Just tell the buyer the deal is off as QT will not bow to your will, and tell him if he wants to buy your gun badly enough, he has to find another FFL. Oh, wait - I forgot - that will deprive you of a sale and profit.