Quoted:
My dpms 260 is a 1/2 - 3/4 moa shooter. So was my AR-10T. Just needs to be fed well developed hand loads.
I'd go as far to say there is no such thing 1/2 moa shooters with factory ammo on the ar platform, larue and gap included. I'm not knocking the gun, I'm saying the limiting factor is the ammo you are putting down the tube.
In my opinion the stamp on the side of the lower has very little to do with accuracy. You can throw in a match trigger, krieger barrel with a hand matched bolt, and shoot 1/2 moa with hand loads... doesn't matter if its a dpms or a larue.
I will agree...all of my OBR time was with FGGM, which is great for factory ammo, but does not let a rifle live up to it's full potential. It is the same as race cars doing custom gear ratios to take advantage of the engine...they would still be fast with a stock transmission, but they are better with fine tuning.
In my experience, the biggest factors in an accurate AR are the barrel and the trigger. A good trigger is not necessary for an accurate gun, but it really helps, alot.