Fledge pretty much nailed it. No love for that round here. Broke bolts multiple times and even trashed a barrel extension on one. Feeding is sketchy like a 7.62x39 AR. I like the 6.8 better myself but again it's pretty pointless. Not enough ft lbs for hunting at any distance on either of those rounds so you might as well shoot a 5.56 unless you are looking for a 6-800yd paper puncher with the 6.5 or maybe a supressed hog gun with the 6.8.