He keeps changing the subject and dodging valid points that are made in the thread.
Anyway for those of you that are interest on how the AR15 DI works and wonder why AR15 DI has a piston click on the link. It's a very simple system and all done in a nice compact package. If you still don't understand it I'll try to explain it as best as I can.
http://www.ar15.com/forums/topic.htm...f=130&t=165511