Hey everyone, just got a complete 6920 upper (16.5 bbl, BCG, charging handle incld. everything still new.) and was thinking about what lower would be good on it. I tried an Aero precision lower once, seemed well made and was a great price, but never got a chance to actually fire that one! Anyone have some suggestions for a lower, or experience with an Aero to verify my suspicions that it's a decent lower?