"Milano calibro 9" is a 1972 Italian crime film directed by Fernando Di Leo. It is part of the poliziotteschi genre, which focuses on police and crime stories in Italy. The film follows the story of a gangster named Ugo Piazza, who is released from prison and becomes embroiled in a world of crime and betrayal. The film is notable for its gritty portrayal of urban violence and the criminal underworld in Milan. It features a strong cast, including Gastone Moschin as Ugo Piazza, and is recognized for its stylish direction and impactful storytelling, making it a classic in Italian cinema.