Hi guys. I'm in the same boat as most, I need a DPMS BCG to complete my build. It's like trying to find the holy grail or something. I put myself on the Harris Tactical wait list but I'm on the fence about it. I don't know anyone who has had one thru them or if they truly are magnetic partical inspected or just stamped such? I added the link below. http://www.harristacticalonline.com/308-762x51-Nickel-Boron-Complete-Bolt-Carrier-Group-NIB-X-FA-HT-NB-308.htm