Training with faulty magazines can create bad training scars and prevent you from establishing proper stimulus-response patterns. Rob Pincus teaches the proper way to find faulty magazines during training sessions. By cycling through multiple magazines and shooting until you reach slide lock or hear a click, you can determine which magazines are empty and which should be tossed in the trash. Try it out next time you’re on the range going through your normal exercises. If you reach the point when you hear a click, don’t throw away the magazine. Mark it somehow and save it. If you use the magazine a few more times and continue to get a click, you can probably assume it is a faulty magazine, rather than a malfunctioning firearm or human error. This will save you time, prevent frustration, and better prepare you for a real-life critical incident.