Looking to do action shoots and found a CORE 1.0 4.5'' barrel on auction for pretty cheap. 1.0 5'' for $400 or the 2.0 models. I already own a 1.0 that's 15yo that may have the **** barrel in it and wondering what you guys would do? Put a fitted APEX barrel in the 1.0 I already have, 2.0 5'' for the better trigger/barrel or 1.0 5''? I don't know how I feel about putting a reflex sight on a pistol for games and then carrying a duty pistol because training may revert to the reflex and the duty pistol wont have it.