I built the turret completely from scratch. I did some research on turrets that other people had built and really didnt like any of them so i kinda designed mine around what i liked and disliked about the others. So far im very happy with it. Its rock solid, it repeats dead on everytime and its quite fast. Ill have to shoot a vid of it sometime. And ya what a time saver wow!! Beats the heck out of a quick change tool post any day.