Azur Lane - Azur Lane for Dummies (Doujinshi) - Ch. 286 - Ammoo-Nation

[MangaDex]

 

[Manuel3999]

Kashino's armor type is LIGHT

 

[Malta]

Title feels like a reference to GTA's weapon store

 

[welcome2atlantis]

And Saratoga's armor type is MEDIUM.
She must have taken it as a personal insult.