Have a NEW, not a pull off from a LE gun, but a really new Colt M4A3 flat-top upper receiver stamped M4. This is not one of the new Canadian Diemaco uppers that Colt has recently started using because they cant keep up with the demand for their own product. This is a hard to get Colt factory produced upper receiver with the correct C AF markings. This upper has the feed ramp cuts, sear relief, and the small hole mil-spec front pivot pin. The ejection port cover and FWD assist are already installed. Sorry no carry handle, charging handle, or bolt. The price is $280.00 plus shipping. Please contact me via e-mail.