I did it to my glock 19- grooves drove me nuts.
I used a dremel and a soldering iron with a brass screw that I checkered with a file to create the stippling. I'm somewhat of a do-it-yourselfer and didn't find it very difficult at all. I am very happy with the way it turned out.
Make sure this is what you want.....I've since decided I want a range gun with more sight radius, a glock 34, and have offered my glock 19 up for trade, but a lot of people are turned off by a permanently customized glock. Anyone interested in it?
I went from a 19 to a 34. You will LOVE it!