As it turns out, Korbin Dallas is an actual time agent. The movie was all fluff anf fold as a way to create a training tape for future generations of time agents. The PKD was a real gun that worked on "quasi statistical probabilities" with a near-non-evhuastive power source. Since the prop was reaching the point where it was 100% accurate, that took it from the "quasi" replica level, to the nuts-on level. Since this is a time discplacement, concern, and the "real" gun is a "Quasi" with the prop being "Accurate" it ran the risk of making the actual PKD dissapear in a big puff of reality. That and the fact that the movie was actually filmed two hundred years from now and sent back to us, therefore if a accurate PKD came into existence in this time frame, the whole sum of the movie would unravel, never be made, and Matt's replica would vanish in a blink of spacial logic.
That and the fact that I am Korbin Dallas as well as his Grandfather, and I said NO.