OK, I want to build a 22 for my kid, i've got 2 choices as basic platform, an old cooey single shot or a remy 574 pump action. Now the thing is I don't like the rear sight on the remy and the cooey is missing both of them. I was thinking of puting biatlon type sights on the cooey, or replacing the rear sight of the remy with a williams hole. Any1 as experience with the williams and would like to share the pros and cons would be greatly appreciated.