One thing not mentioned here. Most firearms are designed with a fail safe mechanism to deal with a catastrophic failure. It allows for the overpressure gasses to vent or explode, if you will, away from the shooter. Mauser type rifles have gas vents. Glocks direct the overpressure downward through the magazine well. This one seemed to relieve the over pressure explosion to the rear, toward the shooter. If someone knows otherwise, I’d love to learn.
True, but remember Paul Mauser learned the hard way when he was trying to develop a semi auto rifle.