I would like to make a suggestion to you, before changing sights on your gun. Have a couple of other people, who have shot double action semi-automatics, shoot your gun, to rule out shooter error. I had a buddy, who also bought a PT-111, and experience the same problem. I have been shooting my PT-145 for several years and picked up his and proceeded to tear a ragged 1.5" hole at 15 yards with his gun, as did my son. After working with him on trigger control, grip and sight alignment, he is now doing the same.....actually a bit better. Just a piece of advice from a humble but experienced PT shooter. If the low and to the left point of impact, has already been proven by others, please disreguard this suggestion. I changed my sights to trijicon night sights and love them, but only because I wanted night sights on my PT-145.