Blood & Bullets: Old West (BBG Legacy Edition) is a traditional wild west role-playing game rooted in the OSR tradition. In Blood & Bullets the player characters rise to either become legendary heroes or infamous outlaws.
Rooted in the OSR, the rules are familiar - as they're based off of Swords & Wizardry (White Box) - and the games is class based, with multiple classes to pick from - The Dude, The Gambler, The Shootist, and The Trailblazer.
If you like old school gaming and you like the wild west, this might well be the game you're looking for!