The Source and also Kinds of Weapons Guns has been part of human nature ever since the day it was created. Guns are somewhat considered as a sign for protection and power at the same time. There are many types as well as classifications of guns. Guns are tools that requires projectiles like bullets. Projectiles are normally terminated within a hollow tube of the weapon called the "barrel".
The range in between one side to the opposite of the barrel is determined in millimeters or inches. It identifies the bullet dimension of a particular weapon.