Thanks for the feedback Sipty!

What do you mean about control of the range? The bullets will explode where your mouse cursor is currently when the bullet leaves the barrel. So if the mouse is close to the weapon, the bullets will not travel that far before it explodes, and if you aim at the other edge of the screen they will fly over there before exploding (unless they hit something on the way). Is that what you mean?
The explosion itself can also take out enemies so you don't need a direct hit, so it can be used tactically depending on the situation. 

BTW, there is a way to reach peace. But its a bit of a puzzle and you need to use both weapons.