Maybe I was just doing it wrong but setting mine up was hell. You will have to tinker with it for a long time to get the no-peep to line up with the anchor point you've already gotten used to. Not only did setting it up annoy the heck out of me, shooting it didn't produce very good groups either. Granted though, if I'd've given the no-peep more than a weeks worth of patience, I might've liked it.