Along with a few ballistics (dum-dum bullets came from a town in India, Dum-Dum) this travels fast rather than far behind Paul Benjamin, who works with two weapons to avenge the mugging/killings of his wife and daughter. The vigilante tots up seventeen criminals in New York before moving to Chicago where he's over twenty when he learns, to his consternation, that vengeance breeds. . . . Efficient, as a multiple one-shot-and a successor, to Death Wish (1972).