I'm considering adding an AR-15 to my arsenal... I don't know much about them though, the threads on AR-15 are hardly a substitution for hands on experience... I'm looking at either: Factory RRA CAR A2 16" w/ A2 Stock: 710$ w/ 6 pos stock: 735$ OR RRA Upper + Standard RRA Lower w/ 6 pos stock: 640$ I don't know if either come with a carry handle... I'm just not sure on exactly how confident i would be even assembling the two peices Thoughts? Suggestions? This is from a seller on AR-15... OH and I choose RRA because they seem to be highly recommended, any other brands recommended(bushmaster, colt obviously) or any reason to stay away from RRA?