Head out to the field with confidence when you bring along the Barra Airguns Exterminator 4 in Nickel BB Revolver. This double-action CO2 powered BB gun boasts a 6-shot cylinder and an adjustable rear fiber optic sight. The full-metal construction is complemented with a 4-inch barrel, a polymer grip and picatinny rails for convenient customization. Includes a swing out cylinder and an ejector rod.