This is worth the read whether you hate, love or are indifferent to Glocks. Here is an excerpt:
https://www.ballisticmag.com/2018/05/23/glock-17-torture-test-ocean/
Eighteen years and 250,000 rounds later, after immersion in both fresh and salt water dozens of times; being tossed into the sand, dust, snow, mud and grit; being presented from a holster and fired constantly in temperatures ranging from sub-zero to over 100 degrees; and even being left on the bottom of the ocean for six months, my conclusion is that the test Glock 17 is without a doubt a heck of a pistol.
https://www.ballisticmag.com/2018/05/23/glock-17-torture-test-ocean/