WTB DPMS Oracle .308 complete upper.

[Patriot Justice]

Hello, I'm new to the forum and would appreciate some help. I have a Utas Xtr12 AR10..It's a semi auto 12 gauge. I would like to convert it to a .308. After contacting the Manufacturer, I was told people have had best results with dpms .308 oracle with some light modifications. Anyone know where I can find one? Or if they make one that matches the specs of the DPMS oracle? Thank you..