"make a working gun script and the Bullets is called Bullet and it is in ReplicatedStorage add comments and instructions on how to make it work"

To make a working gun script with bullets called "Bullet" in ReplicatedStorage, follow these steps:

1. Create a new part in the Workspace and name it "Gun". This will be the gun model.
2. Insert a ClickDetector into the Gun part.
3. Insert a new Script into the Gun part and paste the following code:

```lua
-- Server Script

local gun = script.Parent
local clickDetector = gun:WaitForChild("ClickDetector")
local replicatedStorage = game:GetService("ReplicatedStorage")
local bulletTemplate = replicatedStorage:WaitForChild("Bullet")

function shoot()
    local bullet = bulletTemplate:Clone()
    bullet.Parent = workspace

bullet.CFrame = gun.CFrame * CFrame.new(0, 0, -2) -- Adjust the position of the bullet relative to the gun
    bullet.Velocity = gun.CFrame.lookVector * 200 -- Adjust the speed of the bullet

-- Make the bullet disappear after a certain time (optional)
    game:GetService("Debris"):AddItem(bullet, 3)
end

clickDetector.MouseClick:Connect(shoot)
```

4. Create a new part in ReplicatedStorage and name it "Bullet". This will be the bullet model.
5. Test the gun by clicking on it in the game. It should shoot bullets when clicked.

Note: This is a basic gun script. You can customize the appearance of the gun and bullet models, as well as the behavior of the script, such as adding animations, sound effects, or damage to the bullets.