How do I make laser fingers stop moving right arm and aim the laser right away?

Hello.

I would like to know how to make Laser Fingers point at the cursor when my right arm is still and not moving.

Laser Fingers are a gear made by ROBLOX consisting of a red laser (draining health), a green laser (adding health) and a blue laser (pushing the humanoid target). By simply clicking left mouse button, the type and color of the laser are changed. The lasers shoot always when the tool is equipped.

However, I wish to change it a little bit.

I want to make it have the only blue laser and not moving the right arm.

I succeeded in leaving only the blue laser, but I still struggle with making the arm completely still and only the laser pointing at the cursor.

I tried to delete lines regarding the arm, but it did not work.

The tool is composed of a LocalScript and a Handle (Handle is with Audio and Mesh in it).

The whole script looks like this:

--[[Super Util]]--
function WaitForChild(parent,...)
	local debugPrint = false
	for _, i in ipairs({...}) do
		if type(i)=='boolean' then
			debugPrint = i
		else
			while not parent:FindFirstChild(i) do  
				wait(1/30) 
				if debugPrint then
					print(script.Name..':'..parent.Name..' Waiting for '.. i)
				end
			end
			parent=parent[i]
		end
	end
	return parent
end

function ForEach(parent,func)
	if type(parent)=='table' then
		for _,i in pairs(parent) do
			func(i)
		end
	else
		for _,i in pairs(parent:GetChildren()) do
			func(i)
		end
	end
end

function MakeValue(class,name,value,parent)
	local temp = Instance.new(class)
	temp.Name = name
	temp.Value = value
	temp.Parent = parent
	return temp
end	

function TweenProperty(obj, propName, inita, enda, length,sentinel)
	local startTime = tick()
	local mySentinel = sentinel.Value
	local diff = enda-inita
	while tick()-startTime<length and mySentinel==sentinel.Value do
		obj[propName] = (((tick()-startTime)/length)*diff)+inita
		wait(1/30)
	end
	obj[propName] = enda	
end

--[[Constants]]--

--[[Workspace Variables]]--
local Tool = script.Parent
local Handle = WaitForChild(Tool,'Handle')
local LazerSound = WaitForChild(Handle,'Lazer')
--[[Script Variables]]--

--[[Script Functions]]--

function CastLightRay(startPos,endPos,color,segLength,segSpeed,parts,effectfunc)
	local part, nend = game.Workspace:FindPartOnRay( Ray.new(startPos,(endPos-startPos).unit*999.999),Tool.Parent)
	if nend then endPos = nend end
	
	if part and part.Parent then
		if part.Parent:FindFirstChild('Humanoid') and part.Parent ~=Tool.Parent then
			effectfunc(part.Parent.Humanoid,(endPos-startPos).unit)
		elseif part.Parent.Parent and part.Parent.Parent:FindFirstChild('Humanoid')  and part.Parent.Parent~=Tool.Parent then
			effectfunc(part.Parent.Parent.Humanoid,(endPos-startPos).unit)
		end
	end	
	
	
	local numSegments = math.floor(math.min((startPos-endPos).magnitude/segLength,50))
	local initNumParts = #parts
	for i=numSegments,initNumParts,1 do
		if parts[i] then
			parts[i]:Destroy()
			parts[i]=nil
		end
	end
	for i=1,numSegments,1 do
		if not parts[i] then
			parts[i] = Instance.new('Part')
			parts[i].Parent = Tool
			parts[i].Anchored = true
			parts[i].FormFactor = 'Custom'
			parts[i].Size = Vector3.new(0,0,segLength)
			parts[i].CanCollide = false
			local tlight = Instance.new('PointLight')
			tlight.Name = 'Light'
			tlight.Parent = parts[i]
			
		end
		parts[i].BrickColor = color
		parts[i]:WaitForChild('Light').Color = color.Color
		parts[i].Light.Range =((math.sin(tick()*3)+1)*1)+5
		parts[i].Light.Brightness =((math.sin(tick()*3)+1)*1)+1

		parts[i].CFrame = CFrame.new(((i-.4)*(endPos-startPos).unit*segLength)+startPos,endPos)

	end
	
	return parts
end

--[[Running Logic]]--
local equipped = false
local rayparts = {}
local ColorChoices = {BrickColor.new('Toothpaste')}
local StartOffset = {Vector3.new(-.45,0,0),Vector3.new(0,0,0),Vector3.new(.45,0,0)}
local oldC0 =nil
local nweld
local EffectFunctions = 
{	function(hum,dir) 
		if hum.Torso then
			local nforce = Instance.new('BodyForce')
			nforce.force = dir*3000
			nforce.Parent = hum.Torso
			hum.Sit = true
			game.Debris:AddItem(nforce,.2)
			Delay(.2,function() hum.Sit = false end)
		end
	end
}
Tool.Equipped:connect(function(mouse)
	--game.Players.LocalPlayer:GetMouse()
	Spawn(function()
		local colorChoice = 1
		if not Tool.Parent:FindFirstChild('Torso') or not Tool.Parent.Torso:FindFirstChild('Right Shoulder') or not Tool.Parent:FindFirstChild('Humanoid') then return end
		LazerSound:Play()
		nweld = Tool.Parent.Torso['Right Shoulder']
		oldC0 = nweld.C0
		nweld.CurrentAngle = 0
		nweld.DesiredAngle = 0
		nweld.MaxVelocity = 0
		mouse.Button1Down:connect(function()
			colorChoice=colorChoice+1
			if colorChoice>#ColorChoices then colorChoice =1 end
			LazerSound.Pitch = .75+((colorChoice*.25)*3)
		end)
		equipped = true
		while equipped and Tool.Parent:FindFirstChild('Torso') do
			local tframe = Tool.Parent.Torso.CFrame
			tframe = tframe + tframe:vectorToWorldSpace(Vector3.new(1, 0.5, 0))
			local taim = mouse.Hit.p -( tframe.p )
			nweld.C0 = (CFrame.new(Vector3.new(),tframe:vectorToObjectSpace(taim))*CFrame.Angles(0,math.pi/2,0))+Vector3.new( 1, 0.5, 0 )
			rayparts = CastLightRay(Handle.CFrame.p+Handle.CFrame:vectorToWorldSpace(StartOffset[colorChoice]),mouse.Hit.p,ColorChoices[colorChoice], 5, .2,rayparts, EffectFunctions[colorChoice])
			LazerSound.Volume = ((math.sin(tick()*3)+1)*.25)+.25
			wait()
		end
		nweld.C0 =oldC0
		LazerSound:Stop()
	end)
end)

Tool.Unequipped:connect(function(mouse)
	equipped= false
	LazerSound:Stop()
	for i=1,50,1 do
		if rayparts[i] then
			rayparts[i]:Destroy()
			rayparts[i]=nil		
		end
	end
	if nweld then
		nweld.MaxVelocity =.15
		nweld.C0 =oldC0
	end
	
end)

I am looking forward for a solution or merely an advice.

Thank you.