The Saiga-12 autoloading shotgun is designed for professional and sport hunting small and medium-sized game under different climatic conditions. The shotgun is equipped with a 20-ga barrel with chamber, providing for shooting shot or slugs, including Magnum, with a shotshell length of 2 3/4" and 3". The shotgun demonstrates high reliability and withstands the harshest hunting conditions. The shotgun is capable of delivering single-shot fire and is reloaded automatically due to the energy of the powder gasses, escaping from the barrel bore to the gas cylinder and the energy of the return spring as well.