User blog comment:SlashZero/Summer 2017 E-4 Hard L Node Farming Guide/@comment-861160-20170907045925/@comment-24930367-20170907051207

If that three slot CLs have expansion slot, she can equip Lookout - Main/Sec - Main/Sec/AA gun w/ AA gun on exp slot, no?

(Yeah inferior to Yodo or Melon but still).