Argo is a 2012 thriller directed by and starring Ben Affleck as CIA exfiltration specialist Tony Mendez, who in 1979 helped to devise a daring plan for extricating six American diplomats from Iran during the Iranian Hostage Crisis by posing as a Canadian film crew scouting locations for a fictional sci-fi epic. The film's cast includes John Goodman, Bryan Cranston, and Alan Arkin. Argo would go on to receive three Academy Awards, including the 2012 award for Best Picture.
When the U.S. Embassy in Tehran is seized by Iranian demonstrators on November 4, 1979, a Walther P38 is used by one of the demonstrators to force an American diplomat to open the doors to the main building.
Colt M1911A1
The demonstrators also brandish M1911A1 pistols when seizing the embassy.
Submachine Guns
IMI Uzi
Several members of the Iranian Revolutionary Guard are armed with Uzi submachine guns.
A Revolutionary Guard at Mehrabad Airport holds a Heckler & Koch MP5A2 with a slimline handguard and the early-pattern "waffle" magazines.
Heckler & Koch MP5K
In one scene, a Revolutionary Guard shoots a man with a Heckler & Koch MP5K that has a MP5A2 stock.
Rifles
Heckler & Koch G3A3
Most of the Revolutionary Guards and soldiers are armed with Heckler & Koch G3A3 rifles, the standard service rifle of the pre-revolutionary Iranian military. Though the weapon is accurate, the model is not quite exact; Iranian G3 rifles are known to use Green/Olive-Drab plastic furniture, while the weapons in the film are seen with black.
M16A1
U.S. Marine Embassy guards are seen grabbing and loading M16A1 rifles when the demonstrators break into the embassy compound. They also use the rifles to smash electronic equipment before the demonstrators seize control of the embassy.
Other
Smith & Wesson 276 Gas Gun
U.S Marines use Smith & Wesson 276 Gas Guns to fire tear gas rounds at the demonstrators as they attempt to storm the embassy.