The following weapons were used in the film The Interview:
Aaron Rapaport (Seth Rogen) and Park Sook-yin (Diana Bang) carry Makarov PMs as their sidearms. They use them to take over the broadcasting center. North Korean soldiers can also be seen with this weapon.
Unknown MP5 Variant
In one scene, a North Korean soldier can be seen armed with an AK-74, pointing it at the protagonists when they meet North Korean Director of Communications Park Sook-yin (Diana Bang). It is a stand-in for the North Korean Type 88 variant of the AK-74.
Norinco Type 84S-1
One North Korean soldier can be seen armed with a Norinco Type 84S-1, distinguished by the hooded front sight and lightly-curved 5.56mm magazine. While the North Koreans use the Chinese AK clones, they use the 7.62mm Norinco Type 56, not the Type 84S.
RPD Light Machine Gun
In one scene, an RPD light machine gun can be seen being taken from a hidden compartment and fired at North Korean soldiers by Director of Communications Park Sook-yin.
Type 73 Light Machine Gun
In promotional material for the film, such as the poster shown above, North Korean soldiers can be seen brandishing Type 73 light machine guns.
DShK Heavy Machine Gun
A DShK heavy machine gun can be seen mounted on a T-55 tank that Kim Jong-un (Randall Park) shows off to the protagonists. The film claims the tank was "a gift from Stalin" despite the fact that the earliest T-55 model entered production in 1958, and the starring T-55A entered in 1961, nine years after Stalin's death, and well into the process of de-Stalinization within the Soviet Union. The T-55A used in the film in fact belongs to the 1966 ZTS-Martin production from Czechoslovakia and currently resides in the collection of the Chilliwack Military Education Centre.