First off, has anyone read "The Zombie Survival Guide" by Max Brooks? I purchased it for entertainment, but was surprised to find some really great information in it. In the book, he recommended keeping a .22 cal handgun or rifle around for your S.H.T.F. or G.O.O.D. bag. His reasoning is the ammo is lighter so you can bring more with you, it's cheap so you can practice more, and finally (and most importantly): the only way to kill a zombie is with a head shot. A heavy caliber round might punch a hole and keep going, where a .22 has been known to bounce around inside the skull and cause more damage to brain matter. So.... Why does Glock not make a .22?