The reason that I'm asking this question is that I know quite a few people that own Glock 20's and 29's that only fire full house ammo through them, even for practice. I personally don't due this myself. however I would like to hear from other forum members that do. Is the Glock 20 and 29 the only 10mm's in the world that can stand up to shooting sustained full house loads? What types of problems have you had with your Glock 20 or 29 in doing so if any? cracked frames? Broken extracters?