Charro! (1969)

With his glory days as a criminal far behind him, Jess Wade, a rugged horseman and dangerous outlaw Vince Hackett's right-hand man, now wants out. But going straight is easier said than done. After all, no one betrays Hackett. As a result, Vince frames Wade for the theft of the Victory Gun: the powerful gold-and-silver cannon that fired the last shot against Emperor Maximilian I of Mexico. Now, hunted down like prey, Jess is on the run from the Federales, bearing the hideous mark of a thief. And as Hackett threatens to wipe the small town of Rio Seco off the face of the earth, everyone believes that Jess is guilty. Can Charro clear his name and save the town?