Another barrel, bolt and mag has you up and running with a 6.8 or 6.5, what is a properly made 6arc?
similarly, for 6ARC, "Another barrel, bolt and mag has you up and running" with a 6ARC.
barrels available from Faxon, BA, Rainier, Shaw, X-caliber, Craddock, and others.
bolt is a 6.5G Type 2.
mags from C-Products, ASC, E-Lander, but it that's too Walmart for your tastes, there's Geiselle 6ARC mags.