Since I have been attending SHOT, one booth I always look forward to is the Magpul booth. This year, Magpul celebrated the 10th anniversary of the Magpul PMAG. To celebrate the anniversary, Magpul had an exhibit that showed the evolution of the PMAG. The wall included prototypes as well as actual magazines that were taken into harms way or that had extreme use.
This part of the exhibit featured magazines that were carried by soldiers and firearms instructors. There was a lot of history behind that pane of glass.