From the review and research I did, the e3 bolt has rounded edges which mean less stress. That plus the cam hole makes the designed makes this system a great buy. I mounted the t1 further out like all my red dot (ie aimpoint, eotech, c-more). I guess it was because the first red dot was for a...
I bought my first AR15 in 2007 when prices were like candy stories from old people, "I paid $250-$350 for my bushy, olympic, dpms, etc". She was a cmmg upper with a double star lower. Ran like a champ. Over the years, my collection of guns grow. In 2010, I decided to buy a top tier ar15...