Tap Faucet to Blichmann Beer Gun Adapter?

[Adrenaline-Junkie]

Does anyone make a part (similar to a growler filler) or have suggestions on running beer from the tap to a beer gun so i can fill bottles? I already have everything so suggesting not buying a beer gun or anything else along those lines is pointless. I am trying to figure out the absolute easiest way to fill sample bottles here and there and have the kegerator ready whenever i need to pour samples on site. Any help would be greatly appreciated. Thanks