Ok so I am wanting to build an AR-10. I have found a couple of sites that offer kits which include everything except the stripped lower, AKPartskit.com being one. 20"-24" barrels prices range from $550.00 to $600.00 to fit armalite lowers which I can get for around $250.00. These prices are considerably lower than complete AR-10's I have found. Looking for advise from those who have had experience with these kits as to their quality and accuracy. And possibly another source for the kits as AKPartskit seem to always be sold out and when I called them was advised that they do not back order. You either catch them when they get posted to their site or miss out. Thanks.