I have a Rock River DEA upper receiver in excellent condition with under 500 rounds shot through it. The upper comes with a Surefire rail system, Wilson chrome lined barrel, 5.56 chamber and m4 feed ramps. I am also including the GG&G A2 folding rear sights that came with the rifle as well as a Smith Enterprises Vortex flash hider. I would like $750 OBO shipped and insured for this upper, please PM or email me if interested. Also, feel free to ask for pictures.