Why won't this reload script work properly?

Player = game.Players.LocalPlayer
Gun = script.Parent
mouse = Player:GetMouse()
BulletDamage = 5
enabled = true
reloading = false
firing = false
canshoot = false
canreload = true

function Shoot()
    if script.Parent.Ammo.Value >= 1 and enabled == true then
        enabled = false
        IsFiring = true
        Firing()
    end
end
function Firing()
    repeat

                function Damage(Part)
            if Part.Parent:FindFirstChild("Humanoid") ~= nil and Part.Parent.Name ~= Player.Name then
                Part.Parent.Humanoid.Health = Part.Parent.Humanoid.Health - BulletDamage
                Bullet:Destroy()
            end
        end
        script.Parent.Ammo.Value = script.Parent.Ammo.Value - 1
        print("You have" .. script.Parent.Ammo.Value .. " ammo left")
        enabled = false
        Bullet = Instance.new("Part", workspace)
        game.Debris:AddItem(Bullet, 2)
        Bullet.Shape = "Ball"
        Bullet.Size = Vector3.new(0.07, 0.07, 0.07)
        Bullet.TopSurface = "Smooth"
        Bullet.BottomSurface = "Smooth"
        Bullet.BrickColor = BrickColor.new("Dark stone grey")
        Bullet.CanCollide = false
        Bullet.CFrame = Gun.Handle.CFrame
        Bullet.CFrame = CFrame.new(Bullet.Position, mouse.Hit.p)
        BM = Instance.new("SpecialMesh", Bullet)
        BM.MeshType = "Sphere"
        BM.Scale = Vector3.new(0.25, 0.25, 0.25)
        v = Instance.new("BodyVelocity", Bullet)
        v.velocity = Bullet.CFrame.lookVector * 90
        v.maxForce = Vector3.new(math.huge, math.huge, math.huge)
        FireSound = Instance.new("Sound", Bullet)
        FireSound.SoundId = "http://www.roblox.com/asset/?id= 78407890"
        RP = math.random(60,80)
        RP = RP/10
        FireSound.Pitch = RP
        RV = math.random(70,90)
        RV = RV/10
        FireSound.Volume = RV
        FireSound:Play()
        game.Debris:AddItem(FireSound, 2)
        Bullet.Touched:connect(Damage)
        wait(0.1)
        enabled = true

    until IsFiring == false or script.Parent.Ammo.Value == 0 or reloading == true
end

function StopShooting()
    IsFiring = false
end




--function Reloader()
--  if script.Parent.Ammo.Value < script.Parent.MaxAmmo.Value and  reloading == false and script.Parent.StoredAmmo.Value >= 1 and canreload == true then
--      reloading = true
--      script.Parent.Ammo.Value = 0
--      Reload()
--      if script.Parent.StoredAmmo.Value >=  script.Parent.MaxAmmo.Value then
--          script.Parent.Ammo.Value = script.Parent.MaxAmmo.Value
--          script.Parent.StoredAmmo.Value = script.Parent.StoredAmmo.Value - script.Parent.MaxAmmo.Value
--      elseif script.Parent.StoredAmmo.Value < script.Parent.MaxAmmo.Value and script.Parent.StoredAmmo >= 1 then
--          script.Parent.Ammo.Value = script.Parent.StoredAmmo.Value
--          script.Parent.StoredAmmo.Value = 0
--      end
--      reloading = false
--  end
--end


function Reload(key)
    key = key:lower()
    if enabled == true and script.Parent.Ammo.Value < 30 and key == "r" and script.Parent.Ammo.Value < script.Parent.MaxAmmo.Value and reloading == false and script.Parent.StoredAmmo.Value >= 1 and canreload == true then
        enabled = false
        reloading = true
        script.Parent.Ammo.Value = 0
        RS = Player.Character.Torso["Right Shoulder"]
        for i = 1, 4 do
            RS.C0 = RS.C0 * CFrame.Angles(0,0,0.2)
            wait()
        end
        repeat wait(0.1)
            script.Parent.Ammo.Value = script.Parent.Ammo.Value + 1
            RS.C0 = RS.C0 * CFrame.Angles(0.2,0,0)
            Shell = Instance.new("Part", workspace)
            Shell.TopSurface = "Smooth"
            Shell.BottomSurface = "Smooth"
            Shell.Reflectance = 0.6
            Shell.Size = Vector3.new(1,1,1)
            Shell.CanCollide = false
            ShellMesh = Instance.new("BlockMesh", Shell)
            ShellMesh.Scale = Vector3.new(0.125,0.25,0.125)
            game.Debris:AddItem(Shell, 0.68)
            Shell.CFrame = Gun.Handle.CFrame * CFrame.new(0,-0.5,-0.3)
            wait(0.1)
            RS.C0 = RS.C0 * CFrame.Angles(-0.2,0,0)
        until script.Parent.Ammo.Value == script.Parent.MaxAmmo.Value

        for i = 1, 4 do
            RS.C0 = RS.C0 * CFrame.Angles(0,0,-0.2)
            wait()
            if script.Parent.StoredAmmo.Value >= script.Parent.MaxAmmo.Value then
                script.Parent.Ammo.Value = script.Parent.MaxAmmo.Value
                script.Parent.StoredAmmo.Value = script.Parent.StoredAmmo.Value - script.Parent.MaxAmmo.Value
                print("You have " .. script.Parent.StoredAmmo.Value .. " stored ammo left!")
            elseif script.Parent.StoredAmmo.Value < script.Parent.MaxAmmo.Value and script.Parent.StoredAmmo >= 1 then
                script.Parent.Ammo.Value = script.Parent.StoredAmmo.Value
                script.Parent.StoredAmmo.Value = 0
            end
            reloading = false
        end
        wait()
        enabled = true
    end
end
--
--function Reload(key)
--  key = key:lower()
--  if enabled == true and Ammo < 30 and key == "r" then
--      enabled = false
--      RS = Player.Character.Torso["Right Shoulder"]
--      for i = 1, 4 do
--          RS.C0 = RS.C0 * CFrame.Angles(0,0,0.2)
--          wait()
--      end
--      repeat wait(0.1)
--          Ammo = Ammo + 1
--          RS.C0 = RS.C0 * CFrame.Angles(0.2,0,0)
--          Shell = game.Workspace.ClipSize
--          game.Debris:AddItem(Shell, 0.68)
--          Shell.CFrame = Gun.Handle.CFrame * CFrame.new(0,-0.5,-0.3)
--          wait(0.1)
--          RS.C0 = RS.C0 * CFrame.Angles(-0.2,0,0)
--      until Ammo == MaxAmmo
--      
--      for i = 1, 4 do
--          RS.C0 = RS.C0 * CFrame.Angles(0,0,-0.2)
--          wait()
--      end
--      wait()
--      enabled = true
--  end
--end



mouse.KeyDown:connect(Reload)
Gun.Deactivated:connect(StopShooting)
Gun.Activated:connect(Shoot)