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In tactical hand gunning, it’s the little things. And as Robert Keller can tell you, there are lots of little things. Keller — a career Ranger and Special Forces NCO — spends his time training civilian and law enforcement to shoot and think like an operator. In this quick primer video, he coaches you to think about pistol misfires and misfeeds. Fixing them is easy, but in stressful shooting situations, everything gets harder until it’s drilled into you. Let this seasoned grunt be your guide.