How do you assign a gun to the tool?

So, I am trying to integrate a tool containing a gun script with a vehicle. The problem is, I cant assign the tool to the specific gun. Line 27 is where the bullet exits out of. But since there is more than 1 vehicle, the bullets will only spawn at that gun. Here is the gun script:

enabled = false
player = game:GetService("Players").LocalPlayer                                       
tool = script.Parent
bulletDamage = 350
on = false
mouse = player:GetMouse()
local gunIsFiring = false
local function Shoot()
	if enabled == false then
		gunIsFiring = true
			local sound = Instance.new("Sound",workspace)
        sound.SoundId = "rbxassetid://136523485"
        sound:Play()
game.Debris:AddItem(sound, 2)
			local bulletProjectile = Instance.new("Part", workspace)
			bulletProjectile.Shape = ("Ball")
			bulletProjectile.Name = ("Bullet")
			game.Debris:AddItem(bulletProjectile, 5)
			bulletProjectile.Size = Vector3.new(0.4, 0.4, 0.4)
			local bulletProjectileM = Instance.new("SpecialMesh", bulletProjectile)
			bulletProjectileM.MeshType = "Sphere"
			bulletProjectileM.Scale = Vector3.new(1, 1, 1)
			bulletProjectile.BrickColor = BrickColor.new("Black")
			bulletProjectile.Reflectance = 0.5
			bulletProjectile.TopSurface = "Smooth"
			bulletProjectile.BottomSurface = "Smooth"
			bulletProjectile.CFrame = game.Workspace.Coolcar.HoverV.Hole.CFrame * CFrame.new(0,0,1)
			bulletProjectile.CFrame = CFrame.new(bulletProjectile.Position, mouse.hit.p)
			local bulletForce = Instance.new("BodyVelocity", bulletProjectile)
			bulletForce.velocity = bulletProjectile.CFrame.LookVector * 360
			bulletForce.maxForce = Vector3.new(90000, 90000, 90000)
			game.Debris:AddItem(bulletProjectile, 3)
				local function harmPart(Part)
					
					
local splode = Instance.new("Explosion", game.Workspace)
splode.ExplosionType = "NoCraters"
splode.DestroyJointRadiusPercent = 1
splode.BlastPressure = 10
splode.BlastRadius = 5
splode.Position = bulletProjectile.Position
game.Debris:AddItem(splode, 0.1)
if Part.Parent:FindFirstChild("Humanoid") ~= nil then
Part.Parent.Humanoid.Health = Part.Parent.Humanoid.Health -(bulletDamage)
end
			end
			bulletProjectile.Touched:connect(harmPart)
			enabled = true
			wait(0.5)
			enabled = false
			end
			
		end
	
	
tool.Equipped:connect(function(Mouse)
Mouse.Button1Down:connect(Shoot)
		
end)
	

tool.Unequipped:connect(function(Mouse)
end)