I was reading your post from 3-4-99. You show the stuff about MilSpec etc. No problem. That's factual history.
Tonight there was a program on the Discovery Channel about "American Commandos". They were with an Army SF team during training. One of the team leaders was carrying and using a 14" barrel shotgun. A Remington 870!
You can pass MilSpec, but the "Rough Boys" will use what works best for them.