Every case of Glock Kaboom that I have researched involves reloads. That doesn't mean it hasn't happened with factory ammo, but I suspect 99% of these instances involve shooter reloads. Glock tells you right up front, use factory ammo, use copper jacketed ammo. If you want to shoot lead reloads, buy an aftermarket barrel.
Jams are usually caused from "limp wristing" the guns. New shooters quickly overcome this.
Glocks require absolute adherence to basic firearm safety rules, and do not forgive carelessness. Keep your finger off the trigger unless deliberately shooting the gun!
We have found Glock firearms to be very accurate and reliable.
We've got three Glocks, models G17, G19 & G21, with nearly 26,000 rounds fired between them. Parts broken or replaced: Zero.
My G21 also shoots 10 mm with a conversion barrel and 10 mm magazines.
I do recommend replacing the stock sights with aftermarket night sights, such as Trijicon, Meprolight or AmeriGlo.
We also have SureFire X200s and LaserMax for G19 & G21.
Glocks are a breeze to maintain!
Aftermarket accessories and replacement parts are readily available for Glocks!
We are very pleased with our Glock purchases, and would recommend Glock to any person seriously considering a handgun purchase.
--Ray