The Army's Mechanism of Intimidation

Usually you only use torpedoes, so would a gun like this be useful ?

I, I think it's better to not play with it...

Don't worry. I'm confident about my ability to handle firea...

The history of tools can also be said to be the history of miniaturization

Miniaturization progressed along with reducing the wastefulness and increasing function of the previous inventions. With that the tool become easier to operate, more practical and can be used in more places.

Maruyu's small handgun is also a result of such miniaturization, maybe.