Comment: an analogy.

When asked why does anyone need an "assault rifle" and the answer is to defend against a tyrannical government. Mr. Morgan implies that idea is paranoid or crazy.
Ask this question: Why does anyone need a guard dog? The answer is to defend against burglars. Has anyone ever burgled your home? No, because burglars know I have a guard dog.
The issue is not only the need defend against tyranny, it is also the knowledge that any attempt at it will be costly to the would-be tyrant due to the fact the citizenry is armed.
In any case, it is not up to the likes of P.M. to decide what other people need whether it is an SUV, a hot tub, or 200 varieties of breakfast cereal. Obviously there is a market for these rifles and that should be enough.