New upper being built

[1986s4]

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

[JackHass]

Any markings on the front of the receiver where the gas tube goes?

[okie]

Unless it has obvious Colt marks, it's pretty much impossible to say. The forge mark is just that, a forge mark. Doesn't tell you who machined it or did the anodizing. Chances are it's probably okay, but there have been a lot of dodgy parts produced in the last ten years. Were it me, I would sell it and get something that's a known quantity, like Colt, DD, or Vltor if you want something fancy. Since you sprung for a centurion barrel, Vltor wouldn't be a bad choice. The flanges are tight and the receiver walls are rigid, which would in theory squeeze a little more precision out of it.