I would buy an upper such as the STAG, RRA, or Bushmaster or wait until the X-Treme is coming out.weitascreek said:I have decide to buy a 6.8 upper for my AR. This will be my childrens' Whitetail rifle. Could you all please give advice on which upper to buy? Of course this will also be a nice new gun for me to enjoy, too! :roll: Is Cardinal still having barrel issues and would that be a factor for a gun using hunting rounds? Thank you all in advance.