im having trouble finding a way to add sound to my weapon?

this gun shoot silent, i want to add sound to it when it shoots, how would i do that?

player = game.Players.LocalPlayer
mouse = player:GetMouse()
damage = 10
reload = 1.5
rate = 0.1
name = script.Parent.Name
fire = true
Type = "Auto"
MaxClip = 30
Clip = MaxClip
Stock = 300
firing = false
script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
script.Parent.Activated:connect(function()
    if Clip >= 1 and fire == true then
        if Type == "Auto" then
            repeat Clip = Clip - 1
                local load = player.Character.Humanoid:LoadAnimation(script.Parent.Anims.R15Shoot)
                load:Play()
                firing = true
                local bullet = Instance.new("Part", workspace)
                bullet.Position = script.Parent.Handle.Position
                bullet.CanCollide = false
                bullet.Material = "Neon"
                bullet.BrickColor = BrickColor.new("New Yeller")
                bullet.Size = Vector3.new(.2,.2,.7)
                bullet.CFrame = CFrame.new(script.Parent.Handle.Position,mouse.Hit.p)
                local v=Instance.new("BodyVelocity", bullet)
                v.Velocity = bullet.CFrame.lookVector*500
                bullet.Touched:connect(function(hit)
                    if hit.Parent:FindFirstChild("Humanoid") and hit.Parent ~= player.Character then
                        hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - damage
                        bullet:Destroy()
                    end
                end)
                script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
                script.Parent.ExtraParts.Flash1.Transparency = 0
                script.Parent.ExtraParts.SlidePos1.Transparency = 1
                script.Parent.ExtraParts.SlidePos2.Transparency = 0
                wait(rate/5)
                script.Parent.ExtraParts.Flash2.Transparency = 0
                wait(rate/5)
                script.Parent.ExtraParts.Flash1.Transparency = 1
                script.Parent.ExtraParts.Flash2.Transparency = 1
                script.Parent.ExtraParts.SlidePos1.Transparency = 0
                script.Parent.ExtraParts.SlidePos2.Transparency = 1
                wait(rate/5)
                wait(rate/5)
                wait(rate/5)
                game.Debris:AddItem(bullet,10)
            until Clip < 1 or firing == false
        elseif Type == "Auto" then
            local load = player.Character.Humanoid:LoadAnimation(script.Parent.Anims.R15Shoot)
                load:Play()
                Clip = Clip - 1
                local bullet = Instance.new("Part", workspace)
                bullet.Position = script.Parent.Handle.Position
                bullet.CanCollide = false
                bullet.Material = "Neon"
                bullet.BrickColor = BrickColor.new("New Yeller")
                bullet.Size = Vector3.new(.2,.2,.7)
                bullet.CFrame = CFrame.new(script.Parent.Handle.Position,mouse.Hit.p)
                local v=Instance.new("BodyVelocity", bullet)
                v.Velocity = bullet.CFrame.lookVector*500
                bullet.Touched:connect(function(hit)
                    if hit.Parent:FindFirstChild("Humanoid") and hit.Parent ~= player.Character then
                        hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - damage
                        bullet:Destroy()
                    end
                end)
                script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
                script.Parent.ExtraParts.Flash1.Transparency = 0
                script.Parent.ExtraParts.SlidePos1.Transparency = 1
                script.Parent.ExtraParts.SlidePos2.Transparency = 0
                wait(rate/5)
                script.Parent.ExtraParts.Flash2.Transparency = 0
                wait(rate/5)
                script.Parent.ExtraParts.Flash1.Transparency = 1
                script.Parent.ExtraParts.Flash2.Transparency = 1
                script.Parent.ExtraParts.SlidePos1.Transparency = 0
                script.Parent.ExtraParts.SlidePos2.Transparency = 1
                wait(rate/5)
                wait(rate/5)
                wait(rate/5)
                game.Debris:AddItem(bullet,10)
        end
    end
end)
script.Parent.Equipped:connect(function()
    script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
    local load = player.Character.Humanoid:LoadAnimation(script.Parent.Anims.R15Hold)
    load:Play()
    script.Parent.Unequipped:connect(function()
        script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
        load:Stop()
    end)
end)
script.Parent.Deactivated:connect(function()
    firing = false
end)
mouse.KeyDown:connect(function(key)
    if string.lower(key) == "r" and fire == true and Clip < MaxClip and script.Parent.Parent == player.Character then
        script.Parent.ExtraParts.SlidePos1.Transparency = 1
                script.Parent.ExtraParts.SlidePos2.Transparency = 0
        local load = player.Character.Humanoid:LoadAnimation(script.Parent.Anims.R15Reload)
                load:Play()
        local clone = script.Parent.ExtraParts.Mag:Clone()
        clone.Parent = nil
        script.Parent.ExtraParts.Mag.Weld:Destroy()
        fire = false
        wait(reload)
        script.Parent.ExtraParts.Mag:Destroy()
        script.Parent.ExtraParts.SlidePos1.Transparency = 0
                script.Parent.ExtraParts.SlidePos2.Transparency = 1
        clone.Parent = script.Parent.ExtraParts
        fire = true
        local amount = MaxClip - Clip
        if Stock >= amount then 
        Stock = Stock - amount
        Clip = Clip + amount
        script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
        elseif Stock < amount then
            Clip = Clip + Stock
            Stock = 0
            script.Parent.Name = name.. " (".. Clip.. "/".. Stock.. ")"
        end
    end
end)