So I think I want to build an AR.. Looking to go .223 for long range paper, PD's, Coyotes, Antelope, and GA whitetails.. Mostly for the first 4 though.. Im pretty sure Im looking at a 20" barrel.. 1:8 twist right?? Im going to build it myself, all but maybe the upper.. I may buy the upper already assembled.. If I decide to buy it in pieces, any decent smith should be able to throw it together and headspace it right?? Im going to be buying a lower here real soon.. Is there anything I need to stay away form when dealing w/ lowers? Hows Anvil Arms? Should I get the lower already assembled?? If so whats the advantage?? Am I going in the wrong direction building a long range toy w/ an M4 style stock?? Ive shot the M-16 and dont really like the A2 style stock.. Sorry for all the quesitons.. Thanks..

Brian