If I understand correctly the intent behind the Second Amendment was to ensure that the citizens would be able to defend themselves or our country against any invasion or attack from any aggressors or from an oppressive government. If that be the case, it would seem to me that you should arm yourself with the most effective type of firearm available, such as the much criticized assault rifles or weapons with large capacity magazines, not B.B. guns. I doubt any attackers would limit themselves to weak weapons and would think twice before starting any type of fight.
Senior Chief Petty Officer (Ret.)