Help with Weld script?

Hello, I have a Weld script, but I can't get it to work even when a player hasn't taken it. Is there a way to solve it, allowing the tool to be welded from the start? Also, is it possible to make this script smaller?

I will use this to make guns that can be seen when dropped.

Here's the entire script.

local Gun = script.Parent
local Handle = Gun.Handle
local Body = Gun.Body
local Barrel = Gun.Barrel

function Weld()
	local W1 = Instance.new("Weld", Handle)
	W1.Part0 = Handle
	W1.Part1 = Body
	W1.C1 = CFrame.Angles(ANGLE IN RADIANS) * CFrame.new(POSITION IN STUDS)

	local W2 = Instance.new("Weld", Handle)
	W2.Part0 = Handle
	W2.Part1 = Body
	W2.C1 = CFrame.Angles(ANGLE IN RADIANS) * CFrame.new(POSITION IN STUDS)

	local W3 = Instance.new("Weld", Handle)
	W3.Part0 = Handle
	W3.Part1 = Barrel
	W3.C1 = CFrame.Angles(ANGLE IN RADIANS) * CFrame.new(POSITION IN STUDS)
end

Gun.Equipped:connect(Weld)
Gun.Unequipped:connect(Weld)

Use this function instead to create your welds

local function weldBetween(a, b)
    	local weld = Instance.new("ManualWeld")
    	weld.Part0 = a
    	weld.Part1 = b
    	weld.C0 = CFrame.new()
    	weld.C1 = b.CFrame:inverse() * a.CFrame
  	weld.Parent = a
    	return weld;
end