I'm thinking about having an AR style rifle built, preferably a .223. I've never owned one and there is such a glut of info out there, the number of options makes me dizzy. So here's my first question: What barrels do you recommend? What are the + and - of each type? I've heard of chrome lined barrels and many other options? This rifle will be my designated coyote rifle, so it will not be shot 100s of rounds. Accuracy and smooth ammo cycling is premium. So…barrels???