A single-barrel shotgun is a type of firearm designed to fire one round at a time. It features a single barrel, which means it can only hold one shell before needing to be reloaded. This design is often favored for its simplicity, reliability, and ease of use, making it popular among hunters and sport shooters. Single-barrel shotguns come in various gauges, with the most common being 12-gauge and 20-gauge. They are typically used for hunting small game, such as birds and rabbits, and are also utilized in shooting sports like trap shooting and skeet shooting.