+1 for ordering. I ordered some meprolight adjustable night sights on ebay of all places. They are pretty sweet, will fit any glock as well. The only qualm I have is that I'm unsure if they were previously opened (the tritium's brightness fades over time) and packaged up and sent to me. They are bright enough for now. Meprolight is an Israeli company so I got em straight from Tel Aviv. Just remember to make sure that if you get tritium sights that the package has a proper seal before you open it. I failed to do this, but its no biggie, the sights work fine. Quick get some, the factory glock sights are WACK