I've got a polymer frame, compact Witness in .45 with a ported barrel, 3.6". I'd like to trade for a full-size, 4.5" barrel from a polymer frame Witness. I am only interested in .45 acp. I understand that steel frame will swap and function, but it doesn't match up the same, so I want to swap poly to poly. Edit: I'd be open to a straight trade for a full size .45. I'd do an XDm also, but Witness is my preference. Firearms trade is only OK in Oregon. Slide/barrel/upper could be OK in OR or WA.