Possible Clues:

• Missile-launcher showing what warning shots might do
• What might kill something like albatross over front of ship
• Medieval launcher
• Traverse part of East End for a weapon
• Medieval arrow shooter
• Weapon (used to set off a quarrel?)
• 'Operation --', 1965 British spy thriller and World War II film
• Angry, beak finding weapon
• Weapon that's Spooner's chief boast?
• Crow over boss disturbed by framework for old Arrow