Fake Arms Cframe?

What I'm Trying To Do So I got this arm script working but I can't seem to cframe it to a 90 degree angle and In a position of the player holding the gun. Could you guys help me with this? Thanks.

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

local ArmStorage = game.Workspace:FindFirstChild("ArmStorage")
if not ArmStorage then
    local Model = Instance.new("Model", game.Workspace)
    Model.Name = "ArmStorage"
end 
    wait(1)
print("Player Character Has Loaded")
    local FakeArmL = Player["Left Arm"]:Clone()
    FakeArmL.Name = "FakeArmL"
    FakeArmL.Parent = game.Workspace.ArmStorage
    FakeArmL.CFrame = Player["Left Arm"].CFrame -- I tryed doing this but it did not work  + Cframe.new(0,0,0)
    local Weld1 = Instance.new("Weld", FakeArmL)
        Weld1.Part1 = Player["Left Arm"]       
    Weld1.Part0 = FakeArmL
    Player["Left Arm"].Transparency = 1

    local FakeArmR = Player["Right Arm"]:Clone()
    FakeArmR.Name = "FakeArmR"
    FakeArmR.Parent = game.Workspace.ArmStorage
    FakeArmR.CFrame = Player["Right Arm"].CFrame -- I tryed doing this but it did not work  + Cframe.new(0,0,0)
    local Weld2 = Instance.new("Weld", FakeArmR)
         Weld2.Part1 = Player["Right Arm"]
        Weld2.Part0 = FakeArmR
        Player["Right Arm"].Transparency = 1
    Debounce = false
end end end)