To be a follow up dilemma, exactly what is the reciever color for the current crop of Market A1 uppers floating around? Could it be the vintage "colt gray" or can it be a lot more of the environmentally friendly park? If I'm using a non-nfa class 3 reciever, could https://codystsol.post-blogs.com/52487226/the-basic-principles-of-colt-combat-unit-rail-gun-45