What is the purpose of a barrel in a firearm?

The purpose of a barrel in a firearm is to direct the bullet or shot when the gun is fired. When the trigger is pulled, the firing mechanism ignites the ammunition, and the expanding gases propel the bullet down the barrel. The barrel's design, including its length and diameter, affects the speed and accuracy of the bullet as it exits the firearm. By ensuring that the bullet travels in a straight line, the barrel helps improve the shooter’s precision, allowing for effective targeting of the intended focus. This function is essential for safe and successful shooting practices.