Howdy,
I strongly recommend you add ZRODELTA to the lineup of one piece mounts. We offer them in our DLOC QD and Static for Bolt Action and AR Platform. The bore to bore concentricity is less than 1 thou so there’s no lapping required, etc.
(Full Disclosure: I am one of the “Dudes” at ZRODELTA - not trolling, just thought it could be updated)