Unmarked Colt Contract M16 upper receiver, has rear sight but no port cover $65 delivered. This is a M16 receiver, not M16A1 so it does not have a forward assist. (SOLD)
ASA 9mm A2 upper. No prot cover assembly. May be used for 5.56mm applications, Receiver made by Alcoah Forge. Has forward assist boss milled off, says 'ASA 9mm' on it. Top notch part! $105 delivered. Will swap for a flat top upper receiver.