How can I make fake arms that follow the mouse like in FPS?

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Debounce = false
game.Workspace.ChildAdded:connect(function(Player)--Calls the function everytime a Character respawn or load
local Humanoid = Player:FindFirstChild("Humanoid")
if Humanoid then
if not Debounce then 
    Debounce = true

local ArmStorage = game.Workspace:FindFirstChild("ArmStorage")--Check if there is a Model In Workspace called ArmStorage
if not ArmStorage then--If the Model doesn't Exist then...
    local Model = Instance.new("Model", game.Workspace)--It creates a Model and Names it "ArmStorage"
        Model.Name = "ArmStorage"
end 
    wait(1)
print("Player Character Has Loaded")
    local FakeArmL = Player["Left Arm"]:Clone()--Clone the player's Arm
    FakeArmL.Name = "FakeArmL"--Name it
    FakeArmL.Parent = game.Workspace.ArmStorage--Sets the Clone Parent
    FakeArmL.CFrame = Player["Left Arm"].CFrame--CFrame the Clone Arm to the "Original Arm" position
    local Weld1 = Instance.new("Weld", FakeArmL)--Using a Instance to create a weld and Parenting it to the Clone
        Weld1.Part1 = Player["Left Arm"]--Part1 property of the weld is Attached to the "Original Arm"
        Weld1.Part0 = FakeArmL--Part0 property of the weld is Attached to the Clone
    Player["Left Arm"].Transparency = 1--Set the "Original Arm" Transparency to 1 so you can see the Clone Arm

--Creating the Right Arm(Exactly the Same as to top bit of coding but with different name)  
    local FakeArmR = Player["Right Arm"]:Clone()
    FakeArmR.Name = "FakeArmR"
    FakeArmR.Parent = game.Workspace.ArmStorage
    FakeArmR.CFrame = Player["Right Arm"].CFrame
    local Weld2 = Instance.new("Weld", FakeArmR)
        Weld2.Part1 = Player["Right Arm"]
        Weld2.Part0 = FakeArmR
    Player["Right Arm"].Transparency = 1
Debounce = false
end end end)

I got this working by parenting the cloned arms to the Camera. I also had to clone the Humanoid and Shirt from the character for the character's appearance to apply to the new arms.

You can see the arms when you look down or jump.

LocalScript in StarterGui:

local Player = game.Players.LocalPlayer
local Char = Player.Character
local Cam = workspace.CurrentCamera

local Left = Char:WaitForChild("Left Arm")
local Right = Char:WaitForChild("Right Arm")

local FakeL = Left:Clone() --Create Fake arms
local FakeR = Right:Clone()

local RightW = Instance.new("Weld",Right) --Weld arms together
local LeftW = Instance.new("Weld",Left)
RightW.Part0 = Right
RightW.Part1 = FakeR
LeftW.Part0 = Left
LeftW.Part1 = FakeL

local m = Instance.new("Model",Cam) --Create a model for the fake character
m.Name = "Fake Character"

Char:WaitForChild("Shirt"):Clone().Parent = m --Cloning for character appearance
Char:WaitForChild("Humanoid"):Clone().Parent =m

FakeL.Parent = m --Parent the fake arms to the fake character
FakeR.Parent = m