Last I heard the FBI and DEA are not exclusively GLOCK. There is still some discretion on the part of the agent. Again, if there are more GLOCKs then anything else, it is not because it has the best fit and finish of any other weapon, or is more accurate then any other. Price is still the biggest factor, and where the price is the same or less for a competitor, as in your question, then it comes to other factors. With the Glock it is the much lighter carry weight then say Ruger or Baretta (only reason my FBI buddy switched from SIG to GLOCK was weight) and the wide variety of weapon sizes and calibers that can be had in a pistol that functions exactly the same way in all those varieties. That makes for better training and performance under stress. (You must qualify with every single weapon you will carry. So if you are a Barreta guy and chose a light weight baby GLOCK as a back up or for plain clothes work, you now have a completely differant gun to learn to shoot well. If the slide release and mag release are different then your primary gun are you going to remember how to operate them on the back up when under the extreme stress present when a back up weapon is required? ) Ruger does not have nearly that variety of sizes and calibers nor commonality of operation. Baretta comes closer. Don't get me wrong. Not saying the GLOCK isn't a very good weapon. I'm just saying that it isn't in a league of it's own and certainly not just because many government agencies choose to issue it.