I'll take this.
Colt Defense LE6940 monolithic upper assembly. New-from-factory condition on this one. Internals are still covered in grease. Mil-spec, inside and out. Free-floating 16.1" Barrel is marked C MP 5.56 NATO 1/7 and is chrome-lined. M4 feed ramps. MPC marked bolt and "C" marked bolt carrier. Features a full-length, uninterrupted top rail in addition to the side and bottom rails. Rugged flip-up front and rear sights are a nice feature on this setup, since they don't obstruct the view through an AimPoint, EOTech, or other optics. Also includes rail panels (installed as shown).
Asking $525 shipped for the assembly! Guaranteed satisfaction, as always. First "I'll take it" gets the assembly. Please note that this is listed on several forums.