I finally have a red dot on my Glock 34. After lurking and asking questions I went ahead and added the red dot. I worked with my gun shop guy (Glock Dealer/Armoror) and ordered what I wanted and he did the installation. He boresighted it with a laser boresighter and I went to the range and refined it on paper with a rest. I went with a Burris FastFire II ($199) and the Burris Glock mount ($40). If money were no object, I would have gone with an Eos. I'm very happy with the way it shoots. I previously had a $0.25 trigger job done and a 3.5#link installed. It shoots like a dream and the reset is amazing. I'm getting used to it and I only let go of the trigger once in a while. It is fast. My shooting has improved (I keep stats) by about 15% over the iron sights. My old eyes just don't do iron sights well. I have red dots on my Ruger MK III and my Smith and Wesson Model 41 and I am going to do my Beretta 92 the same way. I got a laugh when the Burris was delivered to the house by UPS. On the box was a red sticker that read "Delicate Instruments, Handle with Great Care." Right! It's now on my Glock 34 slide taking about a gazillion g's each time it is fired.