Originally Posted by RoninSteel
My AR10 currently sits at 12.2 pounds without the sling attached and no mag/ammo. The UBR is friggin heavy for a buttstock.
ETA: I don't even want to know what it'll weigh once I get the 20" sniper upper built. I might have to find a fluted barrel to help keep weight down.
It will weigh a LOT more. My AR-10 with a LW 24" match barrel, DD rail, Larue Mk 12 Mod 0 mount/rings, Leupold 8.5-25x scope, PRS stock, etc. w/o mag/ammo weighs just under 15lbs and that is with fluting under the HG. Going down to a 20" barrel (smart idea BTW), will likely save you about 1.5lbs depending on the barrel contour, etc.