I have an unfired 16" upper, flat top, quad rail. 5.56 chamber 1:7 twist Im just not going that route. Ive decided to build a 10.5 pistol or a 16" A2... or both Wanting $325 for the upper (no bcg) or trade for a 16" A2 upper or 10.5 pistol upper in new/like new condition Then there is a 40rnd ProMag 556 magazine in Desert Tan or FDE, not sure...its lighter than Magpul FDE Brand New $15 TRADE FOR A GREY MAGPUL AR MAG Located in Vancouver, can meet in Portland area and I will ship. Make an offer. im always looking for something.