El rifle implacable ("The Unforgiving Rifle") is a 1965 Mexican western film directed by Miguel M. Delgado. It stars Antonio Aguilar, Flor Silvestre, Olivia Michel, Víctor Junco, Tito Junco, and Crox Alvarado. It centers on two recently orphaned sisters who hire a wrongly-accused man to help them to overcome a group of bandits.