Riot shotgun
shotgun designed or modified for use as a primarily defensive weapon, by the use of a short barrel and sometimes a larger magazine capacity than shotguns marketed for hunting
en-GB/ˈɹaɪət ˈʃɒtɡʌn/
en-US/ˈɹaɪət ˈʃɑtˌɡʌn/
shotgun designed or modified for use as a primarily defensive weapon, by the use of a short barrel and sometimes a larger magazine capacity than shotguns marketed for hunting