COLT XM177E2 RETRO CARBINE - AN OVERVIEW

Charlie's supplies new upper receivers, the factory rifle acquire-offs have examination fired by Colt.  Upper receivers are just take-offs from out on the box rifles and likewise are bought as upper receiver assemblies.  The two are 100% equivalent.  We don't ship in Colt factory box.I in fact later on did that to another OEM 2. Fuel block pins