What are 100 bullets comics?

100 Bullets is an award-winning crime comic book series by writer Brian Azzarello and artist Eduardo Risso that is published by DC Comics's Vertigo imprint. The title is an examination of the ideas of justice and vengeance. This is played out in the book by the following premise: Victims of injustice are offered an untraceable handgun and briefcase with 100 bullets with which they may exact revenge on their abusers and remain untouched and unpunished. The choices of the recipients and the motives behind such an offer are explored throughout the series, gradually exposing a grand scheme.