I built a new M-forgery and I still Have an a2 car upper and a new lower to complete. I would like to get this one done on the cheap. Looking for used parts to get this one going. Here is what I need. complete carrier, Low round count if possible because I know they seat to the barrel after 500 rounds or so. Charging handle, Plain old used handle. Car stock spring and buffer. Flash hider. I have a post ban upper that I threaded. Lower parts. I have a trigger, disconector, and hammer. I also have the selector detent and spring so I need everthing but these. I am also looking for a used BUIS for my other gun maybe even a carry handle. Let me know what you have to sell.