Third person problem with Ray_Ignore?

I am creating a gun script and creates a bullet trail using Ray when you shoot. Everything is fine when I shoot the ignored part in first person. The trail shoots straight and towards the direction where the mouse is pointing to. When I shoot through the ignored part in third person, the trail is a step higher above where the mouse is pointing to.

Gif: https://gyazo.com/92095dbe47007941f7668f94154d10b8

local Ray = Ray.new(MainPart.Position, (CFrame.new(MainPart.Position, Mouse.Hit.p) * Spread).lookVector.unit * ShootSettings.Range)

Hit, Pos = workspace:FindPartOnRayWithIgnoreList(Ray, Ray_Ignore)

Create bullet trail:

local distance = (MainPart.CFrame.p - Pos).magnitude
	
	if TrailSettings.Enabled then 
		for _ = 1, ShootSettings.bulletAmount do
			local Trail = Instance.new("Part")
			Trail.Parent = Ignore_Model
			Trail.BrickColor = BrickColor.new(TrailSettings.Color)
			Trail.Material = TrailSettings.Material
			Trail.Name = "bullet trail"
			Trail.Transparency = TrailSettings.Transparency
			Trail.Anchored = true
			Trail.CanCollide = false
			Trail.Size = Vector3.new(0.1, 0.1, distance)
	
			t = Trail
			
			for i = 0,distance,6 do
				Trail.CFrame = CFrame.new(MainPart.CFrame.p, Pos) * CFrame.new(0,0,-distance / 2)
			end
		end
	end

Bullet trail's start position has to be player's head (not mainpart) fixed it myself