[FE] Gun works when in StarterPack, but not when Cloned from ReplicatedStorage?

Hello! I got a gun that works when the tool is in the StarterPack, but not when its cloned from ReplicatedStorage to Backpack.

For reference, this is a slightly modified script from the one AlvinBloxx provides in his 3 hour tutorial - ( https://www.youtube.com/watch?v=acJu605JNQE&t=1s ).

I feel this is probably an easy solution that I am overlooking, and apologies for all the scripts, I wanted to be as thorough as I could here.

When the player wants to equip an item, the item is cloned from the ReplicatedStorage to the Backpack with this script that fires when the user clicks a button inside their custom Inventory:

local p = game.Players.LocalPlayer

Item1.MouseButton1Click:connect(function()
local tool = game:GetService("ReplicatedStorage").Gun:Clone()
tool.Parent = p.Backpack
end)

And it clones the item just fine to the Backpack, appear on the bar in the bottom-center of the screen for the player to Equip.

I receive two errors, one from the Local Script inside the tool

This is the error I receive: "attempt to index local 'tool' (a nil value) " this line refers to the "tool" in the following Local Script inside the Gun/Tool on Line 25:

local tool = script.Parent -- Getting the tool
local player = game:GetService("Players").LocalPlayer -- Getting the player
local mouse = player:GetMouse() -- Getting the mouse
local sound = tool:WaitForChild("Gunfire")
local torso = "" -- Nothing for now.
local reloading = false -- Variable to check if we are currently reloading
local contextActionService = game:GetService("ContextActionService") -- Allow us to cater for Mobile players
local bodytype = nil -- Nil for now but will check whether player is R6 or R15
local difference = 0 -- Difference between position of head and mouse
local replicatedstorage = game:GetService("ReplicatedStorage").Ranged.GunRemotes
local gungui = tool:WaitForChild("GunGUI")
local bullets = tool:WaitForChild("Bullets")
local reloadtime = 1
-- Remote Events
local equipAnimation = replicatedstorage:WaitForChild("EquipAnimation")
local headshot = replicatedstorage:WaitForChild("Headshot")
local reload2 = replicatedstorage:WaitForChild("Reload")
local shootevent = replicatedstorage:WaitForChild("ShootEvent")
local unequipanimation = replicatedstorage:WaitForChild("UnequipAnimation")
-- Remote Functions
local checkBodyType = replicatedstorage:WaitForChild("CheckBodyType")
local fetchBulletsLeft = replicatedstorage:WaitForChild("FetchBulletsLeft")
--FindBodyType
function findBodyType() -- Used to determine whether a player is R6 or R15
    bodytype = checkBodyType:InvokeServer(tool) -- Invoking the Remotefunction to do a check on the server
    print(bodytype)
end
-- Reloading function
function reload()
    reloading = true
    reload2:FireServer(tool.reload)
    mouse.Icon = "http://www.roblox.com/asset?id=936489163"
    player.PlayerGui:WaitForChild("GunGUI").Bullets.Text = "Recharging!"
    wait(reloadtime)
    bullets.Value = 6
    player.PlayerGui:WaitForChild("GunGUI").Bullets.Text = "Bullets: "..bullets.Value -- REWORD THIS FOR MAGIC POINTS
    mouse.Icon = "http://www.roblox.com/asset?id=936803874"
    equipAnimation:FireServer(tool.shoot)
    reloading = false
end
-- When the tool is equipped, the following event will run
tool.Equipped:Connect(function(mouse)
    gungui:Clone().Parent = player.PlayerGui -- We are cloning the Gun GUI into the player's PlayerGUI
    findBodyType() -- Calling the function above to check the body type.
    equipAnimation:FireServer(tool.shoot) -- Calling the equip animation remoteevent so that the server can play the animation
    mouse.Icon = "http://www.roblox.com/asset?id=936803874"
    mouse.Button1Down:Connect(function()
        if bullets.Value <=0 or reloading == true then
            -- Don't do anything
        else
            local head = game.Workspace[player.Name].Head.CFrame.lookVector
            local mouse = CFrame.new(game.Workspace[player.Name].Head.Position,mouse.Hit.p).lookVector
            difference = (head-mouse)
            local ray = Ray.new(tool.Handle.CFrame.p,(player:GetMouse().Hit.p - tool.Handle.CFrame.p).unit*300) -- Last number is how many studs the bullet will travel.
            local part,position = game.Workspace:FindPartOnRay(ray,player.Character,false,true)
            sound:Play()
            if difference.magnitude < 1.33 then
                shootevent:FireServer(tool,position,part)
                bullets.Value = bullets.Value - 1
            end
        end
    end)
    local reloadMobileButton = contextActionService:BindAction("ReloadBtn",reload,true,"r")
    contextActionService:SetPosition("ReloadBtn",UDim2.new(0.72,-25,0.20,-25))
    contextActionService:SetImage("ReloadBtn","http://www.roblox.com/asset/?id=10952419") -- CHANGE THIS IF YOU WANT TO CHANGE THE RELOAD BUTTON FOR MOBILE.
end)
tool.Unequipped:Connect(function()
    mouse.Icon = ""
    unequipanimation:FireServer(tool.shoot)
    player.PlayerGui.GunGUI:Destroy()
    contextActionService:UnbindAction("ReloadBtn")
end)
headshot.OnClientEvent:Connect(function()
    player.PlayerGui.GunGUI.Headshot:TweenPosition(UDim2.new(0.5,-100,0.5,-25), "Out","Quint",0.3)
    wait(1.5)
    player.PlayerGui.GunGUI.Headshot:TweenPosition(UDim2.new(-1,0,0.5,-25), "In","Quint",0.4)
    wait(0.5)
    player.PlayerGui.GunGUI.Headshot.Position = UDim2.new(1.5,0,0.5,-25)
end)

And when it fires, it gets hung on the animation portion from the Script inside ServerScriptStorage.

The Script inside ServerScriptStorage is below, the script will break on Line 31/36, depending if the Player is a R6 or R15 model over with the error saying: attempt to index local 'tool' (a nil value):

local serverStorage = game:GetService("ServerStorage")
local replicatedStorage = game:GetService("ReplicatedStorage")["Ranged"]["GunRemotes"]
local hitSound = game.Workspace.HitSounds.BloodHit


replicatedStorage.ShootEvent.OnServerEvent:Connect(function(player,tool,position,part)
-- Gun Shooting/Damage portion, no errors here

replicatedStorage.EquipAnimation.OnServerEvent:Connect(function(player,animation)
    local newAnim = game.Workspace[player.Name].Humanoid:LoadAnimation(animation)
    newAnim:Play()
    replicatedStorage.UnequipAnimation.OnServerEvent:Connect(function(player,animation)
        newAnim:Stop()
        for i,v in pairs(game.Workspace:GetChildren()) do
            if v.Name == player.Name.."'s Trajectory" then
                v:Destroy()
            end
        end
    end)
    replicatedStorage.Reload.OnServerEvent:Connect(function(player,animation)
        newAnim:Stop()
        local reloadAnim = game.Workspace[player.Name].Humanoid:LoadAnimation(animation)
        reloadAnim:Play()
        wait(1)
        reloadAnim:Stop()
    end)
end)

function checkBodyType(player,tool)
    if game.Workspace[player.Name]:FindFirstChild("LowerTorso") then -- R15
        tool.shoot.AnimationId = "rbxassetid://1101572628"
        tool.reload.AnimationId = "rbxassetid://1101580893"
        return "R15"
    end
    if game.Workspace[player.Name]:FindFirstChild("Torso") then -- R6
        tool.shoot.AnimationId = "rbxassetid://1101542983"
        tool.reload.AnimationId = "rbxassetid://1101549236"
        return "R6"
    end
end

replicatedStorage.CheckBodyType.OnServerInvoke = checkBodyType

What I have tried so far: In the local script, I have changed Line 25 from:

bodytype = checkBodyType:InvokeServer(tool)

to

bodytype = checkBodyType:InvokeServer(player,tool)

At which point the ServerScriptStorage says that "shoot" from the is not a valid member of Player.

I'm still not sure why the Tool works just fine if its in the StarterPack but not when cloned from ReplicatedStorage. =/ I would appreciate any/all ideas. Thanks!