How do I prevent tools from disappearing from the player's backpack after death?

I created a shop that sold guns, and it all worked fine. The thing is, when the player dies, they lose all the guns that they bought, and only the starter gun remains in their inventory.

Here's my LocalScript inside of one of the guns:

game.Players.LocalPlayer.Backpack.ChildAdded:Connect(function()
    local MaxAmmo = 40
    local Ammo = MaxAmmo
    local character = game.Players.LocalPlayer.Character
    local function createBullet()
        local bulletPart = workspace.bullet:Clone()
        bulletPart.Parent = workspace
        bulletPart.Position = script.Parent.Handle.Part.Position
        bulletPart.Orientation = bulletPart.Orientation + (script.Parent.Handle.Orientation - Vector3.new(0,90,0))
        for i = 0,25,10 do
            bulletPart.CFrame = bulletPart.CFrame * CFrame.new(0,0,i)
            wait()
        end
        bulletPart:remove()
    end

    local player = game.Players.LocalPlayer or game.Players.PlayerAdded:Wait()
    while not character do
        character.AncestryChanged:Wait()
    end

    local hum = character:WaitForChild('Humanoid')
    local reloadAnim = hum:LoadAnimation(script.Parent.Animation)
    local fireAnim = hum:LoadAnimation(script.Parent.fire)

    script.Parent:WaitForChild('MaxAmmo').Value = MaxAmmo
    script.Parent:WaitForChild('Ammo').Value = Ammo

    local canDamage = true
    local Reloading = false
    local uis = game:GetService("UserInputService")

    script.Parent.Equipped:Connect(function()
        uis.MouseIconEnabled = true
        game.Players.LocalPlayer:GetMouse().Icon = 'rbxassetid://68308747'
    end)
    script.Parent.Unequipped:Connect(function()
        uis.MouseIconEnabled = false
        game.Players.LocalPlayer:GetMouse().Icon = 'rbxassetid://442141180'
    end)

    local canFire = true
    local isDamaging = false

    script.Parent.Activated:Connect(function()
        canFire = true
        if Ammo > 0 and not Reloading then
            while canFire == true do
                isDamaging = true
                script.Parent.Handle.fire:Play()
                fireAnim:Play()
                Ammo = Ammo - 1
                script.Parent.Handle.BillboardGui.Frame.TextLabel.Text = Ammo.." / "..MaxAmmo
                script.Parent.Handle.Part.FrontFlash.Transparency = 0
                script.Parent.Handle.Part.BackFlash.Transparency = 0
                wait()
                script.Parent.Handle.Part.FrontFlash.Transparency = 1
                script.Parent.Handle.Part.BackFlash.Transparency = 1
                createBullet()
                if Ammo <= 0 then
                    canFire = false
                end
            end
            while true do
                if isDamaging == true then
                    game.Players.LocalPlayer:GetMouse().Target.Parent:WaitForChild('EnemyHum'):TakeDamage(6)
                end
                wait(.1)
            end
        elseif Reloading == false then
            uis.InputBegan:Connect(function(keyCode)
                if keyCode.keyCode == Enum.KeyCode.R then
                    if Reloading == false then
                        if Ammo <= 0 then
                            reloadAnim:Play()
                            Reloading = true
                            script.Parent.Handle.reload:Play()
                            wait(script.Parent.Handle.reload.TimeLength)
                            script.Parent.Handle.BillboardGui.Frame.TextLabel.Text = "40 / 40"
                            Ammo = MaxAmmo
                            Reloading = false
                        end
                    end
                end
            end)
        end
    end)
    script.Parent.Unequipped:Connect(function()
        isDamaging = false
        canDamage = false
        canFire = false
        Reloading = false
        script.Parent.Handle.reload:Stop()
        reloadAnim:Stop()
    end)
    script.Parent.Deactivated:Connect(function()
        isDamaging = false
        canFire = false
    end)
end)

Yes, this is long and I'm very sorry for that. I really need answers though, because I want this game out as soon as possible.

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