I don't know but it's pretty damn easy. I needed to install a new pin in my G17 (I bent one if you can believe it) so I went ahead and installed an extended Slide lock and Slide stop level and replace both the medal pins... total time, about 5 minutes. Today I installed a set of TFO sets... about 10 minutes and that included a small amount of filing to make the sights fit perfect.
Love or hate the Glock... gotta love that.
Love or hate the Glock... gotta love that.