8mm rib, tapered flat. The only alteration to the barrels are the addition of thin wall chokes by Briley (most would consider an improvement). Both front and center bead are what appears to be ivory. Unfortunately I cannot post pictures on this site but pm your email address and I will be happy to send them to you.
Amazing , if these were k-80 barrels they would be $1000 to $2000 higher. Only difference I can tell is the screw on the ejectors. I have these same barrels on my k32 and could not be more satisfied. Good luck on your sale. I would not sell mine for anywhere near this price. Just my opinion. Doesn't mean a whole lot to anyone but me.