Charlie, I have his front sight tool, but haven't used it yet. In his videos, everything looks so easy - doubt it would go that well if I were doing it! I got my rear sight tool from Nick, and it took some practice to get used to. Mine "wobbled" a bit, and he replaced it with one that was a little bit better. Nick's is a little heavier built, but the Matrix looks like a good design and easier to use. Matrix also includes an insert to help protect the stamped rear sights. I asked if he could supply the insert separately, since I already had another brand of tool, and he sent me one "no charge." He's a neat guy, and I like the "about us", too!- Bob