Another Maruzen airsoft shotgun for Mach Sakai to test and it is the venerable CA870 Bulldog. The Maruzen CA870 Bulldog Airsoft Shotgun is a spring-powered, pump-action airsoft gun, is a compact magazine-fed replica inspired by the Remington 870. It fires one 6mm BB bullet at a time from its 40-round polymer magazine. The gun features a polymer receiver and outer barrel, along with a plastic handguard and pistol grip that have a wood-like texture. The trigger and trigger guard are made of metal, enhancing the overall durability and authenticity of the weapon.