This is my first time doing something like this, but I got most of what I need. The problem is I am trying to build a semi-automatic +bow using the N-strike clips. Now when I have them loaded the darts seem to be held tightly in the clip. Now before I start cutting pvc I need to know if and what, if any, modifications I would need to make to the barrel or clip so it will work? I have looked at quite a few of the other projects and the only one I could find that uses the clip was KaneTheMedeocer's Autobow mkII and I honestly did not understand it.