December 2019 (T500): [[Type 1 Armor-Piercing (AP) Shell Kai|Type 1 Armor Piercing Shell Kai]] and [[12.7cm Twin Mount Type-B Kai 4 (Wartime Modifications) + Anti-Aircraft Fire Director|12.7cm Twin Mount Model B Kai 4 + AAFD]]<br> | December 2019 (T500): [[Type 1 Armor-Piercing (AP) Shell Kai|Type 1 Armor Piercing Shell Kai]] and [[12.7cm Twin Mount Type-B Kai 4 (Wartime Modifications) + Anti-Aircraft Fire Director|12.7cm Twin Mount Model B Kai 4 + AAFD]]<br> |