As of [https://twitter.com/KanColle_STAFF/status/878185448341782529 June 23th], the Mutsuki and Kamikaze class destroyers gain fit bonuses from having small caliber {{GreenGunDP}} equipped.
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As of [https://twitter.com/KanColle_STAFF/status/878185448341782529 June 23th], Yura and certain Mutsuki and Kamikaze class destroyers gain fit bonuses from having single mount {{GreenGunDP}} equipped.