Hey AS, I got a G&P WOC in a trade, great gun but it mysteriously jammed after the first burst. Already, it shot at full auto while on semi and then the bolt jammed back and I couldn't move the selector switch. I managed to open it up and a few parts came out, shown in the pictures. However, I removed them and decided to test the gun again, it worked flawlessly. I won't be shooting anymore to avoid damaging anything, but could someone here help me identify these parts and how to fix it? Thanks!