Sette pistole per i MacGregor

The name of this movie is Sette pistole per i MacGregor released in 1966-02-02 and it's main theme is Ranch owner MacGregor has seven sons and oldest Gregor leads his brothers to Las Mesas, a small town where they want to sell horses. They get into trouble with local people who are related with evil Santillana. After getting imprisoned and losing their horses they decide to go after Santillana's gang..