I have never owned or even shot an AR. Never had the interest. For some reason I am now thinking about it. My biggest concern is sort of based on an assumption or preconceived notion of mine: "AR doesn't do anything particularly well, but everything pretty good". A jack of all trades, master of none. I always felt that if I could only have ONE rifle it would probably be an AR but since I am not limited to one, there really was no place in my life for one. Getting back on topic, my real concern is accuracy. I am currently looking at Sig M400 5.56mm. Probably, "Hunter" model with 20 inch barrel. Looking in the $1000-$1200 range for a rifle, adding Leupold VXII 4-12 (cause I have one on the shelf), is it reasonable to expect MOA or close to MOA accuracy out to say 300 yards out of the box after break-in? Or should I expect upgrades for that type of accuracy?