This specific firearm designation refers to a shotgun with two side-by-side barrels, chambered for the .410 bore shotshell. The “hammer” designation indicates an external hammer mechanism used to fire the weapon, a feature characteristic of older firearm designs. This contrasts with hammerless shotguns, where the firing mechanism is internal.
Such firearms are often prized for their simplicity, durability, and classic aesthetic. They are commonly used for recreational shooting, hunting small game, and pest control. The relatively light recoil of the .410 bore makes it suitable for novice shooters or those sensitive to heavier recoil. Historically, these types of shotguns were prevalent in rural communities and remain popular among enthusiasts of traditional firearms. Their enduring design testifies to their effectiveness and continued relevance in modern applications.