'''Used to improve:''' {{Equipment/Link|12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director}}
+
'''Used to improve:''' {{Equipment/Link|12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director}}, {{Equipment/Link|Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4}}
'''Used by quest:''' [[Quests#F76|F76]], [[Quests#F77|F77]]
'''Used by quest:''' [[Quests#F76|F76]], [[Quests#F77|F77]]