New Nexon interview about CrimsonWood(NotE3)

its not a gun, we went over this already

It's being held like a gun.

Maplers don't hold "one hand" weapons in that hand, except for guns.

But that aside, it does appear to be some sort of one handed crossbow. Even so, this does not mean that the person is wrong to think it looks like a gun (guns and crossbows like this do share some common design elements), and it is certainly not wrong of them to be excited about this expansion either.