This is an abuse of power by the Massachusetts attorney general, it is no different than President Obama’s illegal anti-gun executive orders. If these firearms were legal yesterday, they are legal today, Alan Gottlieb said in an email to FoxNews.com. This ban on semi-auto firearms must be stopped before gun prohibitionists in other states try to enact similar bans by fiat, Alan Gottlieb said. The debate is the latest example of the long-running argument between Second Amendment purists and gun control advocates about whether new firearms laws make people safer. Indeed, the fact that Massachusetts has so few murders committed using assault weapons could be seen as evidence that the original ban was successful. The enforcement notice from the attorney general says a weapon is considered a copy or duplicate if its internal operating system is the same as those of a specifically-banned weapon or if the gun has key functional components that are interchangeable with those of a banned weapon. Such weapons would include copies of the Colt AR-15 and the Kalishnikov AK-47, which are both prohibited by the state's assault weapons ban. Healey's office claims gun makers produce and sell what they call.