Guy on armslist has a USP Tactical 45 for sale. I noticed that it does not have "Tactical" stamped on the slide. He states the earlier models did not have "Tactical" stamped on the slide. Is this possible, or could it just be a regular USP with threaded barrel? Every full size USP Tactical I have ever seen has had the "Tactical" stamping, and the compacts have "CT". Any info would help.