X-Men: First Class is the fifth film in the X-Men film franchise. Set primarily in October 1962, during the height of the Cuban Missile Crisis, the 2011 prequel was directed by Matthew Vaughn and examines the beginning of the friendship between Charles Xavier (who would become Professor X) and Erik Lehnserr (who would become Magneto).
The following weapons were used in the film X-Men: First Class:
A Luger P08 is used by Dr. Klaus Schmidt (Kevin Bacon) while testing Erik Lehnsherr's powers during the 1944 flahback. Later, a former SS member holds one on Erik, who then kills him and uses the gun to finish off the remaining officer.
M1911A1
Charles Xavier (James McAvoy) uses a M1911A1 pistol when training with Erik. Erik is later seen holding it when he and some of the students watch President Kennedy's address. A Division X agent (Tony Curran) fires one at Sebastian Shaw (Kevin Bacon) during the Hellfire Club's assault. It is also seen holstered and used by various U.S. soldiers, notably the soldier in the truck heading to the General's palace.
Tokarev TT-33
The Soviet General pulls a Tokarev TT-33 on Erik and Charles during the confrontation. Another is seen in the hands of a soldier on the Soviet battleship.
Soviet border guards and the General's palace guards are armed with AK-47s.
Colt Model 933 (mocked up as XM177E1)
Soldiers accompanying Charles, Erik, and Moria to the Soviet General's palace are armed with Colt Model 933 assault rifles modified to resemble prototypes of the XM177/CAR-15 rifle. They are recognizable as M933s by the detachable carry handles and 6-position LE stocks, but the A2-type flash hiders have been removed and replaced with fake XM177-style flash hiders. Which would be anachronistic because CAR-15s were not invented with the configurations of the telescopic stock until the late 60s, which should instead be a fixed stock like the one on the M16. There were however prototypes of early CAR-15s in the early 60s, but they did not look like the ones in the movie.
Karabiner 98k
SS Soldiers are seen with Karabiner 98k rifles during the 1944 flashback.
M1 Garand
American GI's are seen with M1 Garands during the aftermath of the assault on Division X. They are also carried by the U.S. Coast Guard crewman during the raid on Shaw's yacht.
M16A1
American soldiers aboard the Naval Blockade are armed with M16A1 Rifles. Since this movie took place during the Cuban missile Crisis in 1962, this rifle, like the CAR-15, this is an anachronism because M16s were not issued to US military en mass until the onset of the Vietnam war and the fact that the M16A1 was not produced until 1968.
Mounted Weapons
MG-42
A MG42 is seen being manned by a soldier in a machine gun nest during the 1944 flashback.
Oerlikon 20mm Cannon
A pair of Oerlikon 20mm Cannon can be seen mounted on some of the U.S. Navy ships blockading the Soviet ships.
Browning M2HB
In a continuity error, the Oerlikon cannons mounted on the U.S. Navy ship Beast and Azazel fight on changed into a Browning M2HB.
DShK
A DShK is seen mounted on a Soviet jeep at the Soviet checkpoint near the General's palace.
Explosives
M72 LAW
A Division X agent is briefly seen firing a M72 LAW at Sebastian Shaw during the Hellfire Club's assault. The weapon is anachronistic as the weapon was not adopted until 1963.
Mk2 Hand Grenade
Col. Hendry (Glenn Morshower) brings a Mk 2 hand grenade aboard Sebastian Shaw's yacht. However, Shaw (Kevin Bacon) snatches the grenade from Hendry and absorbs the grenade blast.
Trivia
Hugh Jackman's Cameo
When Charles Xavier (James McAvoy) and Erik Lensherr (Michael Fassbender) began to recruit mutants, they briefly encounter James Howlett/Wolverine (Hugh Jackman) and attempt to recruit him before he tells them to "go fuck yourself." Interestingly, Wolverine has no memory of this moment due to the events of X-Men Origins: Wolverine leading to his amnesia and the fact that Erik and Charles aged greatly before the events of X-Men took place.
Rebecca Romijn's Cameo
Rebecca Romijn (who played Mystique in the older X-Men films) makes a cameo as the adult form of Mystique's "human" appearance before Erik demanded to see Mystique's true form.
X-Jet
A prototype version of the X-Jet appears near the end of the film. Despite heavily resembling the SR-71 Blackbird, it is actually completely different as it features a passenger area and the fact that Hank/Beast designed it himself.