The State offers declarations from a number of other expert witnesses to address subjects other than historical analogues. In general, these are subjects that this Court has already addressed in its earlier opinion and is beyond the Court of Appeals remand order. Nevertheless, some of these opinions are mentioned here. …
Ryan Busse is a Giffords senior advisor and former firearm industry executive for a manufacturer and seller that specializes in pistols and revolvers, but not AR-15 platform rifles. The few rifles sold by his former firm are traditional-style bolt action models.
Busse opines that a firearm does not need any of the devices, accessories, or configurations listed in the “assault weapon” ban to operate as a gun as intended or to use a gun effectively for self-defense. It is not at all clear what expertise Busse has to support his opinion.
He does not describe any professional experience using AR-15 platform rifles for sport or self-defense. In any event, this type of opinion is not relevant to the question of whether the State may ban a firearm that is commonly owned by law abiding citizens for lawful purposes and does not fit the prerequisites for Federal Rule of Evidence 702.
— Judge Roger Benitez in his opinion in Miller v. Bonta