Just put one on my XD 45ACP tactical. Took a bit to get it sighted in but it works well. Shot 100 rounds and everything is fine. What I really like is that it can be changed from the pulse type beam to the steady beam like laser grips use. Can't stand the pulse beam style. Depending on the gun, you may not be able to reach the switch with your index finger. You may have to use your other hand which is pretty easy. The only thing I don't like about it that it does not attach or detach quickly. Use must use a screwdriver. Also it will not fit in most holsters. But since this is my house gun it does'nt matter.
