Does the term 'stun gun' include tasers?
1. In Hawaii, "any electric gun" is banned from "civilian" possession. §134-16 ""Electric gun" means any portable device that is electrically operated to project a missile or electromotive force." §134-1 Definitions
2. For the SCOTUS ruling, from the language used I'd believe that tasers would be included among Constitutionally-protected weapons. But who knows how some other court will interpret it? For example, look at how many have (mis)interpreted Heller...
3. Massachusetts: Definitions (a) Electronic weapon or device: Any portable device or weapon from which an electrical current, impulse, wave or beam may be directed which such current, impulse, wave or beam is designed to incapacitate temporarily, injure or kill.
In Massachusetts, one may not purchase, possess (openly or concealed), sell, or use a stun gun unless he or she is:
a peace officer engaged in the performance of his or her duty, or
a merchant selling stun guns to a federal or state law enforcement agency.
(Mass. Gen. Laws ch. 140, § 131J.)