The first AR I ever held outside of a gun-shop and the first AR I ever shot is one I built. 
I used Aero Precision upper and lower recievers, a Lothar Walther 1-7 twist 16" barrel, SLR adjustable gas block, Smith Enterprise Vortex flash hider, Larue trigger, ACE stock, and Palmetto State BCG.
I haven't scored a coyote with it yet, just got a Cabela's 1-6x last night.
But I did take it to the range to make sure it works and see how it shoots with a borrowed scope.
