Being A stick to up issue, what is the reciever shade for The existing crop of Market A1 uppers floating about? Is it the typical "colt grey" or can it be more of the green park? The "C" about the barrel would indicate a chrome chamber only barrel. But AFAIK, https://goldcuptrophycolt4512222.bcbloggers.com/30665575/the-fact-about-colt-combat-unit-rail-gun-45-that-no-one-is-suggesting