Ok look, otto the guy with the gun let us use it,
You may say "No it would break the game like the super throw >:((("
Well if you made it so you needed ammo for it to work (IE you would need to carry ammo taking up 1 slot)
That could only be found at otto's house,
This would make every shot count
And you would only use it when you need to.
(Also the gun is already in the files you can pick it up but you can't use it)