Hey guys. I need some tech work done on my m4. It will fire full auto when on semi auto. Also the outer barrel wiggles like None other inside the rail. I know I could fix this my self but thought if I'm already taking it to someone maybe they could look at it anywho. I am also needing a few parts for it. A cover for where the stock tube meets the body as well as the piece that covers the selector hole on the other side of the body opposite of where the selector Switch is. If you need more details feel free to ask. Thanks!!