Which of the following could be classified as a non-firearm weapon under gun license regulations?

A stun gun is classified as a non-firearm weapon under gun license regulations because it does not use gunpowder or explosive means to incapacitate a target. Instead, it delivers an electric shock to temporarily disrupt muscle control and immobilize an assailant, thereby allowing for self-defense without the lethal capabilities associated with firearms.

In contrast, a baseball bat, a knife, and a bow and arrow, while potentially used for self-defense, may be viewed differently within the context of regulations. Baseball bats and knives are often categorized as blunt or edged weapons, and bows and arrows, though not firearms, are classified within a separate category of projectile weapons. In many jurisdictions, firearms regulations specifically apply to items that discharge bullets or projectiles through explosive means, which does not include a stun gun.