We have been installing them for a while and I have been shooting one for a month or so now. I like them much better than the 10 MOA version. The windage knob is also engraved with L's and R's that are easly seen from the shooters position. I am sending all mine in to be converted after season is over. By the way if you want a zero stop they are now only available with 20 MOA turrets so you don't have much choice.