Why do Glocks have an unsupported chamber?
First of all “unsupported chamber” is a misleading term: all barrels must support the round in the chamber. Furthermore, all guns that use the modified Browning action have _partially_ supported chambers. In order to make the Glock function reliably with the widest possible selection of ammunition it has a “less supported” chamber than other guns. This is why reloaded ammunition is not recommended in Glock pistols. If you choose to shoot reloads, please consider an after market barrel.
