Right I was told no 'kits' for panthera which is why I ordered the parts. I was surprised that UA had the items in stock. I've not a clue on drs situation
It cost $200 (plus liner and CF sleeve) to change from 700 to 600. I already had liner and CF. And yes what others said; Huma cal conversion kit and misc parts convert 22 to 30.
Awhile back I converted my Panthera 22/700 to 30/700 quite easily, then just this week from 30/700 to 30/600 - UA had all parts in stock - rec’d in 3 days. The parts list / schematics are on FX website under support.