I bought this sight set for my Springfield XD Tactical that I use in competition. The factory sights just weren't cutting it for the matches I shoot. Install was fairly easy and straight forward (but be forewarned, the factory sights are in there mighty tight, a quality sight pusher makes the job much easier).
Once the sights were installed I went to sight the gun in, shooting from 25 yards. With the rear sight bottomed out I was still hitting 12 o'clock 9 ring on a standard B27 (about 3.5-4" high). A phone call to Dawson and a short conversation later, they were sending me a taller front sight. I received the new front sight blade in only two days, got it swapped for the original blade and went to the range.
Very happy with the results. First shot was low, like 6 o'clock 8 ring but that was OK as my rear sight was still bottomed out. Six clicks up and the rounds are now hitting the X and 10 ring. I now have plenty of elevation adjustment. The Perfect Impact guarantee has provided a Perfect aim point for my XD