I bought a White Oak Armament 7.5" 1:7 barrel from ADCO for my AR pistol.

I was wondering what kind of chamber does it have....5.56, .223, Wylde, etc.?  I wanted to make sure I can shoot 5.56 ammo through it.

I tried contacting ADCO directly, but have not gotten a reply from them. I also tried the search function here, but came up with nothing. And I couldn't find my specific barrel on White Oak's website.

Thanks in advance for any help.

So what markings are on the barrel?  Likely it is a wylde chamber, highly unlikely its a .223 chamber.  My woa 10.5 shoots everything, and groups most into tiny little groups, pretty impressive for a short barrel.

It is Wylde. I bought one from them and that is what they told me.