For the sake of brevity, we’ll mostly focus only on common and modern types of shotguns. A firearm’s action is the mechanism by which the gun loads shells into its breech. First, you need to know that ...

1364 - First recorded use of a firearm. 1380 - Hand guns are known across Europe. 1400s - The matchlock gun appears. Before the matchlock, guns were fired by holding a burning wick to a "touch ...