I finally have all the parts on order to build one. Not my original plan, nor my original timing for this purchase, but not much choice. I believe the best we will get is grandfathering in what is currently in your possession. I have a second lower and LPK that I need to figure out what to do with. I really want a .308 but the parts on those are $$$$, and the extra lower wont work for it.
If you don’t mind a bolt-action rifle, Savage makes a very accurate .308 that goes for about $300.