You have the right to use that which you can provide for yourself. That includes the God given right to use a gun if you can buy it for yourself. My right to self-defense begins and end with what I can afford to use. It is not dependent on instrumentality.
Ah, no. Maybe in your opionion, sure. But it's not a constitutional fact. The state in which you live decides what weapon, and under what circumstance, you may employ for self defense.
Are you familiar with these cases?