Back in the mid '80s,Glock people traveled around giving demonstrations at large companies that had armed security.The new Glock 17 was dunked in a mixture of mud and crud and then fired.The pistol was frozen with co2,and then fired.The gun was dropped from a chopper to land on the hard pavement to be kicked back and forth,and then fired.Last but not least,the Glock was was rolled over and parked upon by a pickup truck,and then fired,RAPIDLY.Apparently,a lot of folks were impressed with the demos,because Glock is still around and a very large company.