How do i make the mag of this gun drop out? Please help me?

I am trying to make this gun magazine drop out when reloading. sense i have no clue on how to do that i am trying to model off of other scripts, now that is not working out correctly, that left me only one option that is to ask for help.

This script is not mine but i am trying to model off of scripts like this to make my own. its is very long i really would appreciate this, if it works i will make give the person the model i had to trim the script becuase of its lenth.

-- Made by Stickmasterluke
 -- edited by fusroblox
local GoreOn=true
function WaitForChild(parent,child)
    while not parent:FindFirstChild(child) do print("2waiting for " .. child) wait() end
    return parent[child]
end

local GunObject = {
    Tool = script.Parent,
    Handle = WaitForChild(script.Parent,'Handle'),
    check = true,

    GunDamage = 27, -- Base output damage per shot.
    FireRate = .1, -- How often the weapon can fire.
    Automatic = true, -- hold down to continue firing
    Range = 250, -- Max distance that the weapon can fire.
    Spread = 1, -- The bigger the spread, the more inaccurate the shots will be.
    ClipSize = 30, -- Shots in a clip
    ReloadTime = 0, -- Time it takes to reload the tool.
    StartingClips = 10, -- If you want infinit clips, remove the IntValue named "Clips" from the tool.
    SegmentLength = 40, -- How long the shot segments are, or the speed of the shot.
    FadeDelayTime = 1/30,


    BarrelPos = CFrame.new(0, 0, - 1.2), -- L, F, U
    Rate = 1/30,
    --local Colors = {BrickColor.new("Bright red"), BrickColor.new("Really red"), BrickColor.new("Dusty Rose"), BrickColor.new("Medium red")}
    Colors = {BrickColor.new("Bright yellow"),BrickColor.new("Mid gray"), BrickColor.new("Medium stone grey"), BrickColor.new("Dark stone grey")},
    FlashColors = {"Medium red", "Dusty Rose", "Bright red", "Really red"},

    Reloading = false,
    Debris = game:GetService("Debris"),
    Ammo,
    Clips,
    LaserObj,
    SparkEffect,
    ShellPart,
    --tool children
    DownVal=WaitForChild(script.Parent, 'Down'),
    AimVal=WaitForChild(script.Parent, 'Aim'),
    ReloadingVal=WaitForChild(script.Parent, 'Reloading'),
    DoFireAni = WaitForChild(script.Parent,'DoFireAni'),

    --handlechildren
    Fire,

}

--[[Member functions]]

function GunObject:Initialize()

    self.Fire=WaitForChild(self.Handle, 'Fire')

    self.Ammo = self.Tool:FindFirstChild("Ammo")
    if self.Ammo ~= nil then
        self.Ammo.Value = self.ClipSize
    end
    self.Clips = self.Tool:FindFirstChild("Clips")
    if self.Clips ~= nil then
        self.Clips.Value = self.StartingClips
    end
    self.Tool.Equipped:connect(function()
        self.Tool.Handle.Fire:Stop()
        self.Tool.Handle.Reload:Stop()
    end)
    self.Tool.Unequipped:connect(function()
        self.Tool.Handle.Fire:Stop()
        self.Tool.Handle.Reload:Stop()
    end)
    self.LaserObj = Instance.new("Part")
    self.LaserObj.Name = "Bullet"
    self.LaserObj.Anchored = true
    self.LaserObj.CanCollide = false
    self.LaserObj.Shape = "Block"
    self.LaserObj.formFactor = "Custom"
    self.LaserObj.Material = Enum.Material.Neon
    self.LaserObj.Locked = true
    self.LaserObj.TopSurface = 0
    self.LaserObj.BottomSurface = 0

    local tSparkEffect = Instance.new("Part")
    tSparkEffect.Name = "Effect"
    tSparkEffect.Anchored = false
    tSparkEffect.CanCollide = false
    tSparkEffect.Shape = "Block"
    tSparkEffect.formFactor = "Custom"
    tSparkEffect.Material = Enum.Material.Neon
    tSparkEffect.Locked = true
    tSparkEffect.TopSurface = 0
    tSparkEffect.BottomSurface = 0
    self.SparkEffect=tSparkEffect

    local tshell = Instance.new('Part')
    tshell.Name='effect'
    tshell.FormFactor='Custom'
    tshell.Size=Vector3.new(1, 0.4, 0.33)
    tshell.BrickColor=BrickColor.new('Bright yellow')
    local tshellmesh=WaitForChild(script.Parent,'BulletMesh'):Clone()
    tshellmesh.Parent=tshell
    self.ShellPart = tshell

    self.DownVal.Changed:connect(function()
        while self.DownVal.Value and self.check and not self.Reloading do
            self.check = false
            local humanoid = self.Tool.Parent:FindFirstChild("Humanoid")
            local plr1 = game.Players:GetPlayerFromCharacter(self.Tool.Parent)
            if humanoid ~= nil and plr1 ~= nil then
                if humanoid.Health > 0 then
                    local spos1 = (self.Tool.Handle.CFrame * self.BarrelPos).p
                    delay(0, function() self:SendBullet(spos1, self.AimVal.Value, self.Spread, self.SegmentLength, self.Tool.Parent, self.Colors[1], self.GunDamage, self.FadeDelayTime) end)
                else
                    self.check = true
                    break
                end
            else
                self.check = true
                break
            end
            wait(self.FireRate)
            self.check = true
            if not self.Automatic then
                break
            end
        end
    end)

    self.ReloadingVal.Changed:connect(function() if self.ReloadingVal.Value then self:Reload() end end)

end



function GunObject:Reload()
    self.Reloading = true
    self.ReloadingVal.Value = true
    if self.Clips ~= nil then
        if self.Clips.Value > 0 then
            self.Clips.Value = Clips.Value - 1
        else
            self.Reloading = false
            self.ReloadingVal.Value = false
            return
        end
    end
    self.Tool.Handle.Reload:Play()
    for i = 1, self.ClipSize do
        wait(self.ReloadTime/self.ClipSize)
        self.Ammo.Value = i
    end
    self.Reloading = false
    self.Tool.Reloading.Value = false
end



function GunObject:SpawnShell()
    local tshell=self.ShellPart:Clone()
    tshell.CFrame=self.Handle.CFrame
    tshell.Parent=Workspace
    game.Debris:AddItem(tshell,2)
end

function KnockOffHats(tchar)
    for _,i in pairs(tchar:GetChildren()) do
        if i:IsA('Hat') then
            i.Parent=game.Workspace
        end
    end
end