A gunsmith showed me a gun used by a State Highway Patrol officer several years ago. I don't remember which model it was, but it was a 9mm. The officer was engaged in a high speed chase on the interstate, doing about 90 mph, and firing his Ruger left-handed out the window of his car. Somewhere in the process . . . he dropped it. The Ruger hit the pavement doing 90, and you can imagine how many time it bounced before it finally came to a skidding halt. The gun had an ugly scratch along the left side that extended into the grip where it hit something with an edge pretty hard, and the top right part of the rear sight was broken off. According to the gunsmith the gun worked flawlessly, he replaced the rear sight, but, of course, there was nothing he could do about the scratch (it was a dandy!). He just said, "That is one tough gun."
When the S&W Sigmas came out they switched to those, but that didn't last long. Don't know what they are using now.