They could likely get away with banning the FRT and bump stock through amending the definition of the machine gun in congress, just not the executive branch.
The ruling on those had nothing to do with overruling any part of the NFA. Only correctly identifying that FRT and bump stocks do not shoot automatically more than one shot by a single function of the trigger, which is what congress said would be the things allowed to be called machine guns.
The ruling on those had nothing to do with overruling any part of the NFA. Only correctly identifying that FRT and bump stocks do not shoot automatically more than one shot by a single function of the trigger, which is what congress said would be the things allowed to be called machine guns.