I'm wanting to put together my fir ar10 and I'm having some trouble deciding on what route to go. I want to keep this build as low cost as possible but I do know that you pay for what you get so I don't mind spending a little extra in some areas. I'm going to use this rifle for hunting, and long range shooting up to 800 yards. My question is: would it be better/less expensive to build my rifle with a mega Ma10 upper/lower receiver and buy a barrel such as a noveske? Or should I get a complete lower and an armalite complete upper? I know with either one I'm going to put a magpul prs on it. So basically which one am I going to get the best accuracy for a reasonable price? Thanks