As I’ve noted, many jurisdictions have repealed their bans on stun guns. People v. Yanna (Mich. Ct. App. 2012) struck down one such ban on Second Amendment grounds, and in Caetano v. Massachusetts, the Supreme Court rejected some of Massachusetts’s arguments in favor of the stun gun ban. The court sent the case back to Massachusetts courts so that they could consider the other arguments, but prosecutors decided to just drop that prosecution, and even agreed to the entry of a formal not guilty finding.
Case: Martel v. Healey