my plan is to shoot rocks and steel out to 600 yards. I thought I might build a nice ar with a billet upper and lower, then I thought id buy a shilen or Krieger 20" barrel. my goal is to make a really accurate long distant rifle, just for fun. after adding up what this spr is going to cost me I started questioning myself about just how bad do I really want this rifle??? After some research, I came across the rock river predator pursuit. This rifle looks pretty darn good. 2 stage trigger, 20" match barrel, and a price about half as much as the rifle I thought id build. I guess what id like to know, is just how much better or how much more accurate can a custom rifle really be? Any thoughts or suggestions?? Thanks Lee