Brownells is working with an A1 forging at the same time, It really is quite common knowledge that they are using forgings produced by Nodak Spud. Unsure where you are receiving your assumptions from. Yes, I am confident the higher receiver is Colt, together with the BCG. It is basically https://connereedaw.blogdon.net/the-basic-principles-of-gold-cup-trophy-colt-45-47555667