This is my first AR and a decent platform the way it sets from what I have seen. I have have read tons of threads on several sites about upgrades and I'm not sure what would be the best combo for my application. It is bone stock other than a Nikon 3x9-40mm scope and a grip that the guy before me put on it. What I want this gun to be is a hunting gun that has a very consistent close group (without throwing the shooter in the equation) and have the ability to do so out to 500 yards. As far as price I haven't looked at much other than scopes, so let's say 1500 as a starting point of price, but I'm flexible on that.