So what's the big difference between this and the luger? i asked one of the saleman at Cabela's and he said, it's a 9x18... WTF? no way. The 9x18 is the markarov or however you spell it, isn't it? He also said, the 9mm nato cannot be use in our standard 9mm glocks and other 9mm pistols... /???? Wanna kill these ads? We can help!