What is a Destructive Device (DD)?
A destructive device (DD) can be two basic categories of things. It can be an explosive, incendiary or poison gas weapon, like a bomb or grenade. It can also be a firearm with a bore over 1/2″ with exceptions for sporting shotguns, among other things. I call the second category large bore destructive devices. As a general rule only this second category is commercially available. Some obvious items I can think of are 37mm and 40mm launchers, and the Striker-12 & Streetsweeper shotguns.
