Brownells Is using an A1 forging at the same time, It is pretty popular awareness that they are using forgings developed by Nodak Spud. Undecided in which you are getting your assumptions from. Thanks for having the time and effort to do this. I have a variety of photographs from https://kylerryaba.muzwiki.com/7286053/a_simple_key_for_colt_combat_unit_rail_gun_45_unveiled