This is a factory Colt M4 flat top upper receiver. The receiver is new, in perfect condition. As shipped from Colt, the receiver has never been assembled. It is a bare receiver, and does not include any other components. Color is grey. The upper is properly marked with "C AF" on the side, "M4" above the gas tube hole, and has the M4 feed ramps.
If requested, I can email pictures or clarify any questions.
Price is $190 shipped. I prefer Paypal (no fee), or will accept a USPS money order. No trades at this time.
The receiver is sold. Thanks.