WTS: Colt 20" Upper Receiver Assembly

I’m selling a complete (minus the bolt carrier and charging handle) Colt 20" upper assembly. This upper assembly was never used other then when Colt test fired it. I removed it from my lower to build a tactical carbine.

Colt 20" A2 upper assembly (marked CM on receiver),barrel marked C MP 5.56 NATO 1/7, .250" pin, from a pre-ban AR marked Colt Sporter Target Model with the serial number ST 025XXX.

$450 and I’ll pay the UPS shipping and insurance.