Through a freak chance of knowing the right people at the right time, I was able to get an LE6940 front sight/gas block assembly to enable me to complete this project. I'm going to be busy for a couple of weeks then will get the upper receiver parts sent off for assembly, drilling, etc as needed.
Attached FileHere is the final parts list for the project. Short of finding actual program parts, I don't think I can get any closer.
Colt LE6920 lower receiver (M4 carbine marked)
Colt ambidextrous selector
Norgon ambi-catch
Colt bolt carrier group
Colt upper receiver
Colt R0770 Carbine HBAR barrel (C MP 5.56 1/7 HBAR)
KAC M4QD flash suppressor kit
Rail System-
A.R.M.S. S.I.R. 58 Mod. Bi-Level Mid-Length SM
Rear Sight-
A.R.M.S. 40L low profile folding sight (wingless swan)
Front Sight-
Colt LE6940 folding front sight/gas block
Stock- VLTOR Modstock (milspec)
After I get assembly completed, I will figure out a plan to get the finish completed.