Big Guns (1973) on Netflix

Plot summary

Nick Gusto runs a crime organization in Milan, and Tony Arzenta is its leading killer. He has a wife and a child at home, and because of them he tells his employers that he wants out of the business. The bosses judge that he knows too much about their operations to be allowed to leave. A car bomb is planted for him, but his wife and child are the ones in the car when it detonates. They are killed, and Arzenta is left alive. He turns on the organization he served and goes after the men responsible for the bomb, alone.