Isn't that MP5 a bit too big? Or is the girl very small?

The artwork was used for this doujin cover: http://www.doujinshi.org/book/79214/

laisy said:

Isn't that MP5 a bit too big? Or is the girl very small?

Keuma wrote on his blog "自分が絵を描く時、モデルガンを持っていると、その『重さ』に引きずられて、一回りデカク描く癖がありまして、これは、それが如実に出てますね。 (I tend to draw guns too big, especially when I have heavy cap guns. This is a typical example.)"