Problem is not by executive order, need congress...you want a rabbit hole, read the ATF def of a firearm, then try to pin the tail on the donkey (AR-15 lower)...doesn't meet the definition of the laws we've enforced for 30 years.

DOJ has dropped a bunch of gun cases where the defense was going to argue an AR lower doesn't meet the definition of a firearm, so why is it regulated? The DOJ and WH (regardless of who's in it) hasn't wanted any federal court to get ahold of this one, but the issues are essentially the same as bump stocks, you want change work with congress.