How do I make it so that the bullet-hole with match the orientation of the brick that it hit?

I'm basically making a paintball game and I need the bullet hole to match the orientation of anything it hits. I was able to get the gun working well, although I can't seem to get it to match the orientation. Does anyone have a fix?

local function CreateBullet(bulletPos)
	local bullet = Instance.new('Part', workspace)
	bullet.FormFactor = Enum.FormFactor.Custom
	bullet.Size = Vector3.new(3.4324, 3.4324, 0.01)
	bullet.BrickColor = BrickColor.new("Black")
	bullet.Shape = Enum.PartType.Block
	bullet.CanCollide = false
	bullet.CFrame = CFrame.new(bulletPos)
	bullet.Anchored = true
	bullet.TopSurface = Enum.SurfaceType.Smooth
	bullet.BottomSurface = Enum.SurfaceType.Smooth
	bullet.Name = 'Bullet'
	DebrisService:AddItem(bullet, 999)
	
	local shell = Instance.new("Part")
	shell.CFrame = Tool.Handle.CFrame * CFrame.fromEulerAnglesXYZ(1.5,0,0)
	shell.Size = Vector3.new(1,1,1)
	shell.BrickColor = BrickColor.new(226)
	shell.Parent = game.Workspace
	shell.CFrame = script.Parent.Handle.CFrame
	shell.CanCollide = false
	shell.Transparency = 0
	shell.BottomSurface = 0
	shell.TopSurface = 0
	shell.Name = "Shell"
	shell.Velocity = Tool.Handle.CFrame.lookVector * 35 + Vector3.new(math.random(-10,10),20,math.random(-10,20))
	shell.RotVelocity = Vector3.new(0,200,0)
	DebrisService:AddItem(shell, 1)

	local shellmesh = Instance.new("SpecialMesh")
	shellmesh.Scale = Vector3.new(.15,.4,.15)
	shellmesh.Parent = shell
	
	return bullet
end