Guns of the Magnificent Seven is a 1969 western, styled in the genre of a Zapata Western, the second sequel to the classic 1960 western action film, The Magnificent Seven, itself based on Akira Kurosawa's Seven Samurai (1954). The film was directed by Paul Wendkos and produced by Vincent M. Fennelly. It stars George Kennedy as Chris Adams, the character Yul Brynner portrayed in the first two films.
The additions to the cast to make up the "new" seven are Monte Markham, Bernie Casey, James Whitmore, Reni Santoni, Joe Don Baker and Scott Thomas. Each have their quirks and baggage. They band together to help free a Mexican revolutionary (Fernando Rey) and help fight the oppression of sadistic militarist Diego played by Michael Ansara. Elmer Bernstein once again provides the music.
(Summary from Wikipedia)