I finally installed the Williams adjustable Fire Sights on my 24/7 Pro DS. It shot lot left every time I shot it. And before somebody says it, no, it is not the shooters fault. I can hit near the bullseye every time with my other 4 pistols but the 24/7 is always low left. I had slid the sight around to fix the windage but I had to shoot about 9 inches high to hit bullseye. They installed in about 5 minutes. I will try them out next weekend.