I have for sale, an early Colt -no forge code- upper receiver, rebuilt by the military. It is in very good condition, and probably lightly used after rebuild.
It has a mix of parts: FNMI Chrome Bore 20" 1/12 pencil barrel, M16 bolt group, charging handle, flat delta ring, A2 port door, triangle handguards .
I bought this for a retro build that never happened, time for it to go to a good home.
Price is $400 shipped. Payment: Money order preferred. I can do FTF in Metro Detroit (cash).
IM if interested.