Anyone familiar with stag arms? I have a urge to get a left hand ar type rifle, because I am tired of the brass and crap flying in front of my face. As far as I know stag arms is the only co. that makes a left hand ar type rifle? It would be a defense, non-hunting rifle for when things hit the fan. Would the 6.8mm be more effective than the 5.56 ? I know it cost more for the ammo but would it be worth it. Come on guys I need your input.