Testing a new build, loads fine, shoot the first shot fine. On the follow up shot, the trigger feels locked and will not release the hammer. If I cycle the safety, if will fire the follow up shot. I did this repeatedly. Fire, turn the safety on, then off and it fires. If I don't cycle the safety, the trigger will not release the hammer. I took it apart and everything works fine without the upper on.
This is not my first build but it is the first one that I have had this problem. Ideas?
This is not my first build but it is the first one that I have had this problem. Ideas?