9mm Luger, 9mm Nato, 9mm Parabellum and 9X19mm are all different names for the same cartridge!!! Along with 9mm+P and 9mm+P+.
Some might be loaded slightly hotter but any 9mm pistol of recent manufacture in good condition will be able to safely shoot any of those. A constant diet of 9mm+P+ in an older gun might not be recommended. But for 100 or so rounds a year it should be fine.
Especially with a Glock you will be fine with any of them!
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Last edited by Trigger Finger; 01-21-2013 at 14:01..