As noted in other posts, I sent my PT1911 in to have the barrel fitted and front sight lowered. They replaced the barrel and looks like a new, lower front sight. Prior to sending it in it was shooting 1" groups (from a rest, of course) about 2 1/2" low at 10 yards. Now shooting 1 1/4" groups at point of aim. Slightly larger groups but right on target. Actually better than I expected so I'm very pleased.