A Beretta M1951 is used by Avner (Eric Bana) and Steve (Daniel Craig) as their personal weapons throughout the movie. Robert (Mathieu Kassovitz) also uses a Beretta M1951 during the assassination of Abdel Wael Zwaiter in Rome, though he later switches to a Walther PPK. It should be noted that Avner is seen holding a Beretta 92F on the DVD cover, which would not have existed in 1972. In reality, the Mossad agents involved in the events portrayed in the film used suppressed .22 caliber Beretta Model 71 pistols.
Walther P38
Walther P38 or post-war P1 pistols can be seen in the hands of Palestinian terrorists throughout the movie, most notably during the initial seizure of the Israeli athletes in Munich and later during a Mexican stand-off between the assassins and PLO operatives in Athens. It should be noted that in real life, the Black September terrorists used Tokarev TT-33 pistols rather than the Walther.
Walther PP
Walther PP pistols are used by members of Avner's team and by Palestinian terrorists, most prominently during the scene in Athens where the PLO operatives and Israeli assassins find each other sharing the same room. Later, Ali (Omar Metwally), uses a Walther PP during a shootout with Avner as the assassins try to flee the scene after killing Zaiad Muchasi.
Makarov PM
A Makarov PM is used by Carl (Ciarán Hinds) and Robert (Mathieu Kassovitz) during the scenes set in Athens, a curious choice considering the weapons used by his fellow team members. A Makarov is also carried by a KGB bodyguard that is watching over Zaiad Muchasi.
Beretta 950 Jetfire
Jeanette (Marie-Josée Croze), the Dutch assassin that the team hunts down after Carl's death, attempts to reach for a Beretta 950 Jetfire before being shot by Avner and Steve's zip guns.
Submachine guns
Uzi
Uzis are carried by the Israeli Sayeret Matkal forces during the 1973 Israeli raid on Beirut.
Rifles
Norinco Type 56-1
Norinco Type 56-1 rifles, distinguished by their hooded sights and underfolding stocks, stand in for the AKS-47s that were actually used by the Palestinian terrorists during the hostage crisis at Munich. Israeli Sayeret Matkal commandos also use Type 56-1s their raid on the PLO compound in Beirut.
An Israeli-model FN FAL fitted with a scope is used by Avner (Eric Bana) and Steve (Daniel Craig) when they attempt to assassinate Ali Hassan Salameh in Spain.
Heckler & Koch G3A3
Heckler & Koch G3 rifles are used by the West German policemen that surround the apartments where the Israeli hostages are being held, and later during their botched hostage rescue attempt at the airfield. Though the rifles used during the hostage rescue attempt are modified to resemble G3A3ZFs with 4x scopes, the police marksmen in real life used G3 rifles without telescopic or night vision devices.
Other
Zip Guns
Zip Guns, disguised within bicycle pumps, are used by Avner, Steve and Hans when confronting Jeanette, the freelance Dutch assassin.
White Phosphorous grenade
WWII-era white phosphorous grenades are part of an explosive device assembled by Robert to kill Zaiad Muchasi in Athens. When the device fails to go off as planned, Hans (Hanns Zischler), the assassination team's document forger, uses another white phosphorous grenade to initiate the device, leading to a shootout between Muchasi's guards and Avner's team.
F-1 Grenade
"Issa" (Karim Saleh), the leader of the attackers at Munich, uses a Soviet F-1 hand grenade to destroy one of the helicopters containing Israeli hostages after being ambushed by the West German police at the Fürstenfeldbruck airfield.