Duck! You Sucker! is a 1971 Western directed by Sergio Leone and stars James Coburn as a fugitive Irish explosives expert who escapes to Mexico in 1913 only to find himself mixed up in another revolution. This film was released in the US under the title "Duck, You Sucker!", which is the literal English translation of the Italian title (which is "Giù la testa, coglione!"). However, it was subsequently re-released under the title A Fistful of Dynamite in order to capitalize on Leone's previous films. MGM would later release the film on DVD under the original title. Duck! You Sucker! was Leone's last western as well as his most overlooked film, mostly due to the movie being marketed as a comedy/satire of westerns, especially his earlier Man With No Name trilogy.
The following weapons were used in the film Duck, You Sucker!:
Juan (Rod Steiger) uses a Single Action Army Cavalry throughout the film, most notably to threaten John. It is also used by revolutionaries and the soldiers. A shorter SAA with a 4.75" barrel is also seen.
Steyr M1912
A Mexican police officer (Luigi Pistilli) is armed with a Steyr 1912 when he tries to arrest Juan after seeing him kill his fellow officer.
Astra 400
One of Juan's children is armed with an Astra 400 when they rob the stagecoach. John is also seen having it holstered various times through out the film. This weapon is anachronistic, as the Astra 400 was made in 1921, 8 years after the movie took place.
Walther P38
Col. Gunther Reza (Antoine Saint-John) uses a Walther P38 as his sidearm. Gunther can barely be seen holding a Walther P38 after the Mallory ambush and after the train is derailed. This is an anachronism, as the Walther P38 was introduced in 1938 and the film takes place in 1913, 25 years earlier.
Browning Hi-Power
A Browning Hi-Power is taken by John (James Coburn) from the governor Jaime (Franco Graziosi). This is an anachronism, since the Browning Hi-Power was introduced in 1935, and this film takes place in 1913, 22 years earlier.
The Winchester Model 1894 is used by Mexican revolutionaries, as well as Juan's children.
Mauser M43
At least one bandit and later the Mexican troops carry M43 Spanish Mausers throughout the film, likely as it was filmed in Spain. The M43 is likely meant to stand in for the Steyr-made M1912 short rifle used during the Mexican Revolution.
Short Magazine Lee-Enfield (SMLE)
A variant of the Short Magazine Lee-Enfield (SMLE) is seen in the hands of a British soldier in the Irish pub.
Winchester Model 1892 "Mare's Leg"
A "Mare's Leg" Winchester Model 1892 is used by a young John to shoot the British soldiers in the pub and his friend Nolan (David Warbeck).
John uses an MG 42 with the buttstock removed to fire upon Ruiz's army column while they're on the bridge to great effect. However, this is an anachronism, since the MG42 was introduced in 1942, and this film takes place in 1913, 29 years earlier.
Maxim MG08
Juan uses a Maxim MG08 alongside John during the canyon battle. When John gives him the command to fire, the weapon does not. He tries to tell John, but then it goes off and surprises him. When he regains control, he uses it to great effect. The weapon is also used in the film by revolutionaries and Mexican soldiers. It is also used in Reza's armored car.
ZB-53 / Vz.37
An anachronistic ZB-53 / vz. 37 is seen in the Mexican camp and on the governor's train, but is never used.
Shotguns
12 Gauge Double Barreled Shotgun
A 12 Gauge Double Barreled Shotgun is used by Juan to shoot the cart containing his recent robbery victims, sending it careening down the hill and sending its occupants flying. It's also used by one of the bandits.
Mortar
Brixia Model 35
The rebels are uses an Italian Brixia Model 35 light mortar.