I think AXTS calls that bolt lock feature "ADAC".

I don't know if you are looking for the AXTS features or specifically an AXTS lower.

If the former, I recall AXTS licensed the ADAC feature to Rainier Arms (and maybe one other company). I don't know if those lowers are available or if they are forged or billet.

That said, AFAIK, they have NOT licensed the ambi bolt release, so the only place you can get that is on thie AX556 billet lower.

-john