I have been pondering how to make my own laser tuner. The main hold up for me is what laser to purchase. For an accurate homemade laser tuner the laser must be true to the laser housing. I was planning on using an old sight bracket and attaching the laser. Any thoughts on what type of laser to use. I just came up with possibly using a Cabela's bullet type laser bore sighter for the laser. Anybody have ideas for me?