I have been a Deputy Sheriff for over thirty years. I Retired once and got back in it. My first duty weapon was a 357 magnum. Then went to a 9mm glock. I love the glock, but not the performance of the 9mm ammo back then. The poor performance of the ammo caused me to go back to the 357 magnum. Later on down the line the Department bought us Glock 22 40cal. We kept them far a long time with good results. Now our Department just went back to the Glock 17. They tell us that the 9mm ammunition has came a long ways. As for the glock, I love it and never have had a problem with it. If you look at most of your firearm manufactures, the all make some sort of copy of a glock.