That definitely works! Good shooting, TX380.
I thought that APF and Alexandria Pro Fab were just different forms of the same company at one time. Now I know different, and am going to get my parts, uppers , lowers, ect., only from APF then. Getting something that was supposed to be destroyed because of rejection isn't what I want to pay money for. Cosmetic problems are one thing, but if there happens to be spec problems, that is entirely different....and until something is purchased, there isn't much to check for specs.
I am just glad the upper is working for you, though; and keeps working on and on into the future for you without any problems.