Look at White Oak Precision/White Oak Armament.
Much as I am convinced that John Holliger and crew are the best there are for an AR in most calibers, there are others out there.
Might check Dtechs version of the sorta same thing, I forget what it was but it beats the 6mm in performance. Maybe the 30 rem necked down? Mike is good folks too, John swears by it, and thats gold for me.
Jeff
