shoot-out
noun /ˈʃuːt aʊt/
  /ˈʃuːt aʊt/
- a fight that is fought with guns until one side is killed or defeated
- He was killed in a shoot-out in a Chicago hotel room.
 - The three-day siege began in a bloody shoot-out on Sunday morning.
 
Oxford Collocations DictionaryShoot-out is used after these nouns:- penalty