Upper Engravings...

[Cire 5th]

I cannot find this thread I saw a couple of months ago. Specifically for ar 15 uppers. It lists the unique engravings per company so you can tell who made the upper.

Thanks in advance.

[Guns R Tools]

Maybe this one

http://www.calguns.net/calgunforum/showthread.php?t=296258&highlight=upper+forging+marks

[Cire 5th]

No, it was a list thanks though.

Forget it.

Ill come across it sooner or later.