A co-worker showed me his fixed barrel Dan wesson. It is a 6" S/S Palmer gun. Has anybody had the barrel off of these?? If so, will an regular DW barrel thread into place?? I realize I would have to drill the frame and install the roll pin for the shroud, but this can be done easily. Before I tell him that this is a GO, I'd like to know if DW facory barrels will thread into the frame.