Whom to cast in Westworld remake

Yul Bryner in "Magnificent Seven"

Yul Bryner in "Westworld"

When they made "Westworld" in the mid-70s, for the robot gunslinger they used Yul Bryner, who dressed like his character from "The Magnificent Seven." This would be shorthand casting, casting an iconic cowboy actor to play a cowboy robot. In the '70s, they had a few hundred cowboy actors to choose from. But, if they were to remake "Westworld" today, whom could they get to play the character? How many iconic Western actors do we have left?

Clint Eastwood springs to mind, but he might be getting a little old.
Kevin Coster has been in a couple westerns over the past 20 years.
Robert Duvall?
Kurt Russell and Val Kilmer?

Is that it?

It's amazing how a once-ubiquitous genre has all but disappeared.

There's always Arnold Schwarzenegger but that would be shorthand casting for a killer robot character.