bought a rt mag off ebay,,the valve is in great shape,,,The bolt is chewed up,,,needs a new sear as well,,,,prolly a new oring kit as well as a bolt spring...Upon further tearing the gun apart I noticed the bolt that is attached to the body that sits down inside of the grip frame is broke off....Thinkin that's why it is malfunctioning because the only thing holding the body to the rail is the banjo srew....So the bolt is slipping past the sear...Could jb weld fix this..