Brownells Is working with an A1 forging in addition, It really is fairly common understanding that they're using forgings created by Nodak Spud. Undecided in which you are receiving your assumptions from. It's the early reciever without any fence throughout the mag release and all early form launch pins with https://colt-m16a1-for-sale23444.thechapblog.com/30626357/the-fact-about-colt-combat-unit-rail-gun-45-that-no-one-is-suggesting