Does owning a stun-gun a require complicated procedures, or is it unaffordable or something?
I see it's better than pepper sprays.
Varies state by state. In Wisconsin you needed what's called a "concealed carry permit" which basically means you legally have permission to carry a gun that is hidden by your clothing. Carrying openly in a holster has been legal for a while, but it wasn't until the law passed 2 years ago allowing concealed that we could carry stun guns legally.