Brownells is employing an A1 forging in addition, it's pretty prevalent understanding that they're using forgings established by Nodak Spud. Unsure in which you are finding your assumptions from. Many thanks for having the time and effort to do this. I've a variety of pics in the VN period carbine https://cashyabzx.ttblogs.com/10923412/not-known-facts-about-colt-combat-unit-rail-gun-45