Utterly Mad

The KS-23 is pretty hardcore. The solid steel slug that it can fire, originally made for destroying prisoner barricades in Russian prisons, can also destroy the engine blocks of cars at up to 100 meters, apparently.

Not just any car, a military grade truck. The shot shells for it come in two types, "shrapnel-10" and "shrapnel-25." the number indicates the shots effective range in meters. That solid slug you mentioned is not just for destroying barricades, it is also called a "barricade." The rounds also come in "lilac (tear gas)," "Bird cherry (also tear gas)," and "Zvezda (flashbang)."
All from the wiki of course. I'd like to try firing one.