My shooting pard recently installed a .40 S&W Bar-Sto barrel with conventional rifling in his 10 mm Glock. Now, he has plenty of range pick up brass and less worries about a ka-boom.
Agree. Forgot there are those who shoot and thrive on pushing the envelope. For the rest of us, a case head letting go is unlikely but still possible.. . . A case head can let go in any firearm. The question is, when it does, what is the outcome? A steel-framed autoloader will survive. A plastic framed gun (whether Glock or otherwise) will likely not.
A Glock with an aftermarket barrel may be less likely to have the problem as described, but don't say it's impossible. If a case head lets go the outcome is probably the same.