Again you are spouting your fantasy and nothing that has been proposed in congress. There is no evidence that there is any public knowledge or support of this. Again you are the lone wolf.
He might try Ron. There is already significant opposition against any EO regarding firearms and there will be significant legal challenges that would delay implementation till after he leaves office.
If they do not, it will be discovered during their annual audit, and their business license revoked for failure to maintain paperwork. And how would this go about being implemented? Tell us precisely how all firearms manufacturers, not only in the united states, but in all countries around the world that export their firearms for sale in the united states, can come together to create a unique type of serial number that automatically informs even an untrained individual at first sight that it belongs exclusively to a handgun, and not any other type of firearm. Tell us how such a proposal could be implemented, to say nothing of actually being enforced. Make your case for why your logic is sound.
