I saw that one and what made me choose the other one at first was that the one you linked to says "heavy contour barrel". I am trying to keep this light weight so that is what made me lean towards the other one. That said, I definitely like the handguard better on the A3. So, now I'm at do I spend the $640 on that new upper or try to sell the DPMS I have now (I could maybe get $750 I'm guessing) and then try to get an armalite, and if so, which one.