How is a firearm defined?

The definition of a firearm primarily focuses on the mechanism by which it operates, specifically the use of gunpowder to propel a projectile. This definition accurately encompasses various types of firearms, including handguns and rifles, as it specifies the crucial element of gunpowder or a similar propellant that enables the weapon to function.

In contrast, defining a firearm simply as a weapon that uses explosive force to project a projectile lacks specificity, as there are various types of explosive devices that do not fit the legal or common definition of firearms. Additionally, identifying it solely as a self-defense tool does not encompass the entire range of purposes firearms serve, including recreational shooting, hunting, and sport. Furthermore, while minimum length requirements can apply to some legal definitions of firearms, this is not a universal characteristic and does not capture the essential functioning aspect of firearms. Thus, the definition that emphasizes gunpowder as the propellant aligns best with commonly accepted definitions found in legal and educational contexts regarding firearms.