I think you can shoot gas rounds out of them, not sure. To each their own, nothing wrong with shooting fireworks if that's what you enjoy.
also smoke rounds
idk is that too much to add on to my saiga 12.
http://www.2ndamendmentsurplus.com/Spikes-Tactical-Havoc-ST-9-9-Side-Loading-37mm-Launcher-ASA-ST9-HAVOC.htm
what do you guys think?