Guns And Guts
A hired gun wants to complete his last big job--killing a sheriff who hides away inside an old monastery--so he can retire with a prostitute.
Starring Pedro Armendáriz Jr., Rogelio Guerra, Zulma Faiad, Quintín Bulnes, Santiago Eduardo Urueta, José Antonio Mena, Enrique Ponton, Armando Acosta, Jorge Rivero, René Cardona
Watch "Guns And Guts" on Amazon released in 1974. It's a action & adventure and crime movie, and has a rating of 5.3 out of 10 from Imdb which is fairly okay for this kind of movie, and is currently only available for purchase or rent.