While using this as a carry weapon seems to be problematic, using it for a home defense gun has some merits. Should you ever have to use it, the Grand Jury should have no problem with your having/using a inherited weapon. It's very difficult to demonize this as apposed to a Mac10 or a "assault" gun.
Rightly or wrongly after any shooting, no matter how "righteous", there is a small window when the authorities may view you as a suspect in a crime. Even if your protecting your children from Freddie Krueger, the powers that be have to make sure that Freddie wasn't dispatched in violation of the law. In this weeks political climate, the DA would be under pressure to file charges against you if a "assault rifle" were used.