https://www.youtube.com/watch?v=5eEt4Y_STOw
With guest appearances by Gun Jesus and other familiar faces.
This video, and their attempt to categorize Personal Defense Weapons, both present-day and historical, gets me thinking about gun rules, and what systems that are out there that could differentiate the different types of PDWs, without turning into Phoenix Command.
The two original versions of Twilight: 2000 could have made a decent stab at it, I think. They were just barely on the good side of too clunky.