I recently bought an Olympic Arms 16" AR. I was looking on the Oly Arms websight, and read their page on their barrels, how they are made, stamped, etc. I looked on my barrel, in front of the front sight post, where they said they stamped their info, but I can't find it. I took of the handgard and there are no marks there either.

Is there any way I could find out who manufactured it? That would be a lot of help.

Wilson makes barrel blanks for almost all the aftermarket manufacturers. I would assume that Oly took the blank and did it themselves.  Guess you could call and ask them[:D]