People have, in general, limited self control and, when given access to powerful firearms in highly stressed situations, all sorts of mayhem therefore ensues.
Today’s invention offers a way to limit the damage done by people pulling triggers.
A fraction of all bullets sold in popular calibres would be secretly substituted with a new design (perhaps by members of yet another covert government agency).
The substitutes would be externally identical to their deadly siblings but inside they would contain a very small amount of gunpowder and a separate chamber filled with cyanoacrylate glue and sand.
Pulling the trigger on one of these rounds would result in no bullet discharge but instead a small rupture of the casing would occur -propelling the adhesive and sand particles into the mechanism of the gun. This would render it effectively irreparable and cause people to lose faith in all such weapons.