I have the parts for a new upper including a Centurion HF SoCOM 14.5 barrel. It's going into a stripped upper I got in trade from a friend. No pics but it is greyish in color and it has the square forge mark. The rail has T marks ? Is that what they are called? The grey is attractive and it looks well made but my friend couldn't remember where he got it. W/o pics I know it is hard to be sure but any ideas on who made it?

Regards