CMMG AR-15, 5.56mm cal. complete upper receiver including bolt and hand guards.  20" CMMG marked barrel has a 1/7 twist, an excellent bore, bird cage style flash hider.  Adjustable post front sight, no rear sight but has a picatinny style rail for optics or rear sight.  Near 100% matte black finish.  Bolt is complete and unmarked.  Ribbed round ventilated hand guards are in great shape.  Should be plug and play on your AR platform.  Can ship directly to you.