A double-barrel shotgun is a type of firearm that features two parallel barrels, allowing the shooter to fire two shots in quick succession. This design is commonly used for hunting and sport shooting, providing a wider spread of shot, which can be advantageous for hitting moving targets like birds. These shotguns can be classified into two main types: side-by-side and over-and-under. The side-by-side configuration places the barrels next to each other, while the over-and-under design stacks one barrel above the other. Both types are popular among hunters and competitive shooters for their reliability and ease of use.