In this update, I have added the first of the shooting mechanics. You'll notice that with the second weapon made, I added 2 barrels. The barrels you add will each fire a projectile, but each pull of the trigger only counts as one ammo consumption. Later, doing something like this might become expensive to balance this out.
But in the mean time, I made a double barrel pistol to show it working, and each projectile spawns at the barrel position!
Hope you enjoy :)