WTS larue stealth 2.0 upper with 12.5” centurion arms barrel and keyed gas block. Pinned gas block as well. No bcg or muzzle device or CH. 750 shipped OBO. Less than 500 rounds through the barrel. Only trades are aimpoint t2, 5.56 ammo, 300 blk ammo, 9mm 147 grain ammo.