Simply put, Turtle Gun mod adds turtles that will spawn around in your world as well as a gun from which you can fire explosive turtles from! Why would someone make this?
I got burned out updating my other mods and just wanted to do something fun. So after playing around in Garry's Mod with a Turtle Gun, I decided it would be fun to make my own Turtle Gun for Minecraft.
Short Story: Because why not!
Stuff that's Added
First off, the mod adds these little turtles. They don't really do much out in the wild. They will drop turtle shells, have a very small chance of dropping a Turtle Gun, and can be breed using carrots or wheat seeds.
Next is the Turtle Gun itself. It'll fire turtles (and play a jaunty tune) that will explode after a short period of time. Firing while sneaking will launch a bouncy explosive turtle. Uses turtle shells from your inventory as ammo, and has a cooldown time between each shot.