I just purchased a used Glock 17. I paid $500 for the pistol,holster,2 17 round magazines, 1 30 round magazine, 1 Glock knife, and 50 rounds. I am thinking that it is a Gen 1. It has no mounting rails and no finger grips. I was wondering if I paid too much for it? I was told that I should have only given the guy $350 for it. Like I said I am a rookie at the gun purchasing thing.