every person that post is going to post something different, I have a PSA lower/upper, DPMS 1:8 Stainless barrel, Jard single stage trigger, PSA LPK less trigger, A2 buttstock, 556 brake, Yankee Hill free float tube adn DPMS 4 rail gas block. Weaver 1.5x6 Scope. Works for me. I think I have close to $1000 into including the glass. Still workign on a load but it shoots MOA.