If you watched TV in the late 60s into the 70's, you will remember the faces of most of the actors in this otherwise mediocre western. The story, although clichéd from our vantage point, maintains enough interest to keep watching, despite the washed out film print. The production values also high enough not to interfere with enjoying the picture. Mostly, it's seeing all these familiar actors once again coming together to breathe life into Hollywood's vision of the old West.
With the emergence of films such as Little Big Man (1970) and Soldier Blue (1970), the "revisionist" had become the new version of the West, until the disastrous Heaven's Gate (1980) which finally ended the genre. It was left to the Europeans with the Spaghetti westerns of the mid-60's and the rise of Clint Eastwood as a "movie star" (transitioning from his TV western side-kick work in Rawhide) to return the Western to the big screen.
But, this mid-60's entry to the classic Western genre gives us a last act with so many famiar faces from the Golden Era of the Western
Slim Pickins (playing against type as the villan), Paul Fix as the surrogate town marshall, Strother Martin, in his usual role as the whiny snitch, Rance Howard (father of Ron) and his son Clint (although without his bear!) and finally Patrick Wayne, standing in for his father John Wayne, to give the film it's final nod to the great westerns of the near past.
Seeing all these western players in one last Hollywood movie is fun enough to make up for any flaws in acting or production. Making An Eye for an Eye a worthy entry in the Western canon.