[Hevaricubed]

Think of the physics/basics of guns,

1) A gun has to be metal or ceramic or some other kind of very hard material to withstand an explosion big enough to send a bullet hurteling at almost the speed of sound, and not blow up.

2) A gun needs to be ergonomic, because when you fire, there will be some recoil, and if you have big spikes coming out of the back, whats going to happen?

3) The little yellow things that come out of a gun when fired are not sparks, they are flames. Which means you are losing effeciency from firing the gun, this is bad.
The bigger the flame, the less effecient the gun, sacrificing range, speed and force.

Flames the size of yours would basically make the bullet squeese itself out of the barrel and drop to the floor, that is of course if the explosion doesnt blow up that parsnip in your face.

Here's vegtable product in your eye.