A firearm is a mechanical device that launches a projectile at high velocity through a tube as the result of expanding gases from a burning propellant. Firearms have changed over the years, but are still based on forcing a projectile such as a bullet or shot through a barrel. 

Understanding how firearms work and the correct way to handle them is the first step in becoming a safe and responsible hunter. 

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When learning to handle firearms always follow The Four Primary Rules of Safe Firearm Handling to prevent accidents:

_Always point your muzzle (or bow) in a safe direction.

_Always treat every firearm as if it were loaded.

_Keep your finger off the trigger until you are ready to shoot.

_Be sure of your target and what lies in front of and beyond it.

 Generally, there are three types of firearms: rifles, shotguns and handguns.

 The three basic parts of a modern firearm are:

_action, which loads, fires and ejects ammunition

_barrel, a metal tube that the projectile passes through

_stock, that supports the action and in many cases, the barrel