An aging group of outlaws look for one last big score as the "traditional" American West is disappearing around them.
At the beginning of the 1913 Mexican Revolution, greedy bandit Juan Miranda and idealist John H. Mallory, an Irish Republican Army explosives expert on the lam from the British, fall in with a band of revolutionaries plotting to strike a national bank. When it turns out that the government has been using the bank as a hiding place for illegally detained political prisoners - who are freed by the blast - Miranda becomes a revolutionary hero against his will.
Singing cowboy Eddie Dean and his sidekick Soapy (Roscoe Ates) enter into the thick of things when they thwart a stagecoach holdup. Our heroes take it upon themselves to champion the cause of stage-line owner Margie Rodgers (Helen Mowery), who's being victimized by an unknown villain. Dean suspects that there's more to the case than mere robbery, and he's right: someone wants to gain control of Margie's business, and that someone is?
A cowboy who was trying to return the loot from a robbery finds hmself suspected of the crime.
The notorious Dalton Boys have decided to go straight and move to Argentina. Just before they leave, they learn of a friend whose land is about to be seized by a greedy land company. Before they can help, the man is killed by a company assassin. The brothers do manage to rescue his widow and head for the hills. There, they decide to revert back to outlaw life. Meanwhile, a newspaper publisher's daughter falls for one of the brothers.
Chasing jewel thieves, Captain Carson and Magpie head for the border where Carson, posing as a Chinaman, opens a store that buys jewelry. To flush the thieves into the open, Carson wins all their money at poker. They agree to sell him the jewels but plan to kill him and keep both the jewels and the money.
After the train station clerk is assaulted and left bound and gagged, then the departing train and its passengers robbed, a posse goes in hot pursuit of the fleeing bandits.
After a robbery gone wrong, three criminals turn against each other and embark on a blood-soaked bullet-riddled quest for cash and revenge. An unusual contemporary black-comedy western set in Australia, chock full of action and homage to the work of Sergio Leone.
As was customary in his late Monogram westerns, Johnny Mack Brown plays an undercover agent in Colorado Ambush. Brown is sent to Colorado to stem the activities of a particularly vicious outlaw gang
An obscure entry in the musical Western cycle, Swing, Cowboy, Swing was produced by and starred country & western bandleader Cal Shrum. Shrum and his band, the Rhythm Rangers, are warned away from playing a theater in Big Bend by Cal's brother, Walt Shrum and his Colorado Hillbillies. Ignoring the warning, the Rhythm Rangers arrive at the theater only to be shot at by a masked stranger. With the help of stranded vaudeville performer Max "Alibi" Terhune and his dummy Elmer, Cal manages to catch the mystery shooter who turns out to be Frank Lawson (Frank Ellis). The film apparently did not generate enough interest for a series, but was re-released by Astor Pictures in 1949 under the title Bad Man From Big Bend.
Wells Fargo agents Jack Douglas (Kirby Grant) and Bosco O'Toole (Fuzzy Knight) are sent after a gang of stage robbers. Danny Burton (Bernard Thomas, brother of Laura Burton (Jane Adams, is implicated before Jack is able to prove that saloon owner Lee Fain (Danny Morton) is the man behind the outlaw gang.