I did the IWLA
pistol league Tuesday and used the SOLO. You have to shoot one handed. It failed every shot. I've put 300 rounds through it two handed and not one fail. I'm going to try it again and let someone else shoot it and see if it's just me. If not I'm going to call Kimber and give them a piece of my mind. I switched to the G27 and not one fail one handed.