A Philadelphia police officer is seen with a 2nd Generation Glock 17 in a promo screenshot. A man who helps Gerry in a looted Newark grocery store (Ruari Cannon) is also seen wielding a Glock. Gerry and Dr. Fassbach (Elyes Gabel) also carry Glocks after landing at Camp Humphreys in South Korea. Segen (Daniela Kertesz) later uses a Glock at the WHO lab in Cardiff, which is given to her by one of the WHO doctors as a last resort. A 3rd Generation model is also used by Gerry while aboard the Antonov An-12.
SIG-Sauer P229
What appears to be a SIG-Sauer P229 is used by one of the men that attacks Gerry's wife inside the supermarket.
Beretta 92FS
Beretta 92FS pistols, standing in for M9s, are used by the soldiers stationed at Camp Humphreys in South Korea, including Captain Speke (James Badge Dale). A US Navy SEAL who escorts Gerry Lane (Brad Pitt) to the base is seen firing a suppressed Beretta 92FS at the zombies.
Jericho 941R
Segen uses her service Jericho 941R on the Belarus Airways plane to kill some zombies before running out of ammo. Segen's left hand was amputated, so she couldn't reload the gun.
Tommy's father (Ernesto Cantu) carries a Smith & Wesson Model 15 when the Lanes retreat to an apartment complex in Newark, New Jersey. Tommy (Fabrizio Zacharee Guido) later uses it to save Gerry Lane (Brad Pitt) from a zombie when the Lanes escape Newark by helicopter.
Shotguns
Benelli Supernova Tactical
A Benelli Supernova Tactical with the retractable stock removed is carried by a Navy guard at the end of the film.
Remington 870 Field Gun
A Remington 870 Field Gun is seen with a survivour at the end of the movie.
Rifles
M16A2
Pennsylvanian Army National Guard, US Marines and Israeli soldiers can be seen with M16A2 rifles. Some of the rifles appear to be airsoft replicas.
M4A1 Carbine
US military personnel including Special Forces, SEALs and US Marines can be seen with M4A1 carbines throughout the film. The US Army Rangers including Captain Speke (James Badge Dale) that Gerry meets at an air base in South Korea are armed with suppressed M4A1s. A USAF parajumper (Matthew Fox) fires an M4 when on the rescue helicopter for Gerry (Brad Pitt) and his family. The M4A1s have a variety of attachments including EOTech sights, flashlights and CAA CBS stocks.
M4A1 Carbine with M203 Grenade Launcher
One of Gerry's IDF escorts uses an M4A1 Carbine with an ACOG scope and M203 grenade launcher. Gerry is later seen waving the carbine to flag down the Belarus Airlines jet.
Custom CAR-15 variant
Gerry's IDF escort Segen and several other soldiers use AR-15 carbines with A2 upper receivers and 10" barrels with XM177-style muzzle brakes. Similar composite carbines appeared in Blood Diamond and Black Hawk Down.
CTAR-21
One of Gerry's IDF escorts is armed with a Tavor CTAR-21 assault rifle.
AKS-47
Soldiers of the Palestinian security forces were armed with AKS-47 rifles.
Remington Model 700 BDL
Gerry uses a Remington Model 700 that he finds in a commandeered RV while fleeing from Philadelphia to Newark. He tapes a kitchen knife to the barrel as a makeshift bayonet.
Machine Guns
FN Minimi
A standard-length FN Minimi is used by a helicopter-borne USAF parajumper sent to rescue Gerry and his family. This machine gun is fitted with a 200-round cloth ammo bag and was likely used as a substitute for the Mk 46 Mod 0.
FN Minmi Para
A FN Minimi Para can be seen being fired by an Israeli soldier with a 200 round cloth ammo bag, standing in for the IMI Negev.
FN M240
The M240 machine guns are seen mounted on IDF helicopters.
Browning M2HB
Browning M2HB heavy machine guns can be seen on Pennsylvania Army National Guardsmen HMMWVs in the trailer.
Hand Grenade
M67 Hand Grenade
IDF soldiers use M67 hand grenades while battling the zombies. Gerry also uses Segen's grenade on board the Belarus Airways plane when it becomes overrun by the infected.
Heavy Weapons
Mk 19 grenade launcher
A Mk 19 grenade launcher can be seen mounted on a HMMWV as a civilian RV runs a military road block. MK 19s can also be seen mounted on IDF HMMWVs.
GAU-8/A Avenger
American A-10 Thunderbolt II ground attack aircraft can be seen in the trailer. These carry internally-mounted General Electric GAU-8/A Avenger rotary cannons under the nose.
Trivia
In the US, trailers approved for "Appropriate Audiences" are not allowed to show people brandishing weapons at other people in the same shot, even if the people are undead zombies. Thus, Israeli soldiers' rifles were digitally replaced with walkie-talkies for these scenes in the previews.