What is your favorite and why?? I know this topic has been talked about before, but after scrolling though all the threads here, I couldn't find anything. I thought DD (DakotaDeer) asked about this a while back, but I could be wrong... As some of you know, I'm an AR newbie and have some questions regarding them. I recently bought a NIB Black Rain Ordnance BCG for my lefty Stag and that thing is slick. I know it's a coating and some say it may flake off, but I'm also hearing differing opinions on this from other forums. I don't want this to start any arguments, just wanted to replace the rough as a corn cob BCG on my new to me AR like I did on my Stag 6HL. I know from personal experience that the Stag operates SO much better now, it isn't even funny and it's a damn pleasure to clean now. I was also wondering if you have a preference toward the M16 vs. the semi auto BCG. All my other AR's have the M16 auto BCG, while the new AR is just semi-auto. Does one tend to produce better accuracy or have any other attributes I should be thinking about?