Rio Bravo is a 1959 Western directed by Howard Hawks and is considered the first of three films (all of which starred John Wayne), which were variations on the story of a sheriff and his friends defending his office against an aggressive outlaw element in the town. The other two films in this "trilogy" were 1966's El Dorado and 1970's Rio Lobo. It was reported that John Carpenter used Rio Bravo as inspiration for his 1976 thriller Assault on Precinct 13.
The following firearms were used in the film Rio Bravo:
John T. Chance (John Wayne), the Sheriff of Presidio County, Texas, carries a Winchester 1892 Saddle Ring Carbine with a large loop lever in .44-40 WCF as his primary weapon, holding it in nearly every scene of the film. This rifle can be seen on display at the Cowboy Hall of Fame in Oklahoma. Technically, the appearance of the Winchester '92 in this film, set in the 1880s, is an anachronism.
Colorado: "You always keep that carbine cocked?"
Sheriff Chance: "Only when I carry it."
Colorado: "How come you carry a rifle?"
Sheriff Chance: "I found some were faster than me with a short gun."
Several of Burdette's henchmen carry Artillery SAAs with 5.5" barrels. "Dude" (Dean Martin), one of Chance's deputies, grabs one from a henchman earlier in the film and later carries two in his holsters. Colorado Ryan (Ricky Nelson) also carries two in his holsters.
Quickdraw Model (4.75" barrel)
For the first half of the film, Dude (Dean Martin) carries a Quickdraw SAA that once belonged to Stumpy (Walter Brennan). Dude tells Stumpy that the revolver is "a little stiff" and offers to "file the action a bit" for him, but Stumpy refuses, saying "I don't want no easy pull; I might shoot myself!" Pat Wheeler (Ward Bond) also carries a Quickdraw model, drawing it when he is shot at by one of Burdette's hitmen in town.
Chance (John Wayne) keeps a Colt 1878 shotgun in his sheriff's office, eventually taking one when his rifle is taken temporarily by Burdette's henchmen. Charlie (Walter Barnes), the bartender at the Rio Bravo Saloon, also carries one that Dude (Dean Martin) forces him to hand over. Feathers (Angie Dickinson) also carries one when she is tending bar at the Hotel Alamo.
Remington 1866 Derringer
The cheating gambler at the Hotel Alamo carries a blued Remington 1866 Derringer with black grips, which Chance and Colorado take away from him. Chance tosses it to the hotel's manager, Carlos Robante (Pedro Gonzalez-Gonzalez), who holds it on the gambler.
Winchester Model 1892
Chance keeps a rack of Winchester Model 1892 rifles in his office. Colorado (Ricky Nelson) grabs one to use during the final gunfight. A Winchester '92 is also used by a hitman paid $50 to assassinate Pat Wheeler while he walks down the street in town.
Colt 1849 Pocket
Matt Harris (Bob Steele), one of Burdette's henchmen, tries to sneak a small revolver into town under his vest. It is only briefly seen, but it appears to be a Colt 1849 Pocket.
double-barreled shotgun
Carlos Robante (Pedro Gonzalez-Gonzalez), the hotel owner, takes a long Double Barreled Shotgun to assist Chance and Colorado in freeing Dude from Burdette's men during the final gunfight.