I have a like new Complete - M&A Parts Post Ban 20" HBAR A4 flattop upper w/ knurled and vented FF tube, fixed front sight.
Very good quality upper. Dark black, sightly lighter than my stinger lower. Only 16 rounds thru it, fired wolf and barnul, no problems. List $400.00, asking $350.00 + actual shipping! Can throw in a couple Orlite 30 rounders. Email me for questions and pics - email@example.com