How do I make the Arms of an R6 body follow mouse?

I've made this code and it points to mouse it just is inside of the body for some reason?

repeat wait() until game.Players.LocalPlayer.Character

local body = game.Players.LocalPlayer.Character
local left_arm = body["Left Arm"]
local right_arm = body["Right Arm"]
local mouse = game.Players.LocalPlayer:GetMouse()


--

leftDown = false
rightDown = false


mouse.Button1Down:Connect(function()
    leftDown = true
end)

mouse.Button1Up:Connect(function()
    leftDown = false
end)

mouse.Button2Down:Connect(function()
    rightDown = true
end)

mouse.Button2Up:Connect(function()
    rightDown = false
end)
--


local leftArmWeld = Instance.new("Weld")
leftArmWeld.Parent = body
leftArmWeld.Part0 = body.Torso
leftArmWeld.Part1 = left_arm
leftArmWeld.Name = "LeftArmWeld"


local rightArmWeld = Instance.new("Weld")
rightArmWeld.Parent = body
rightArmWeld.Part0 = body.Torso
rightArmWeld.Part1 = right_arm
leftArmWeld.Name = "RightArmWeld"

local armoffset_left = body.Torso.CFrame:Inverse() * body["Left Arm"].CFrame
local armoffset_right = body.Torso.CFrame:Inverse() * body["Right Arm"].CFrame


mouse.Move:Connect(function()
    local x,y,z = CFrame.new(body["Left Arm"].Position,mouse.Hit.Position):ToEulerAnglesXYZ()
    local x1,y1,z1 = CFrame.new(body["Right Arm"].Position,mouse.Hit.Position):ToEulerAnglesXYZ()

    if leftDown then
        leftArmWeld.C0 = armoffset_left * CFrame.fromEulerAnglesXYZ(x,y,z) * CFrame.fromEulerAnglesXYZ(math.rad(90),0,0)
    else
        leftArmWeld.C0 = armoffset_left
    end


end)