Justice League is the 2017 crossover feature film that unites several of the heroes of the Worlds of DC, who had previously been introduced in Man of Steel, Batman v Superman: Dawn of Justice and Wonder Woman (2017). Ben Affleck returns as Bruce Wayne/Batman, Gal Gadot as Diana Prince/Wonder Woman, Ezra Miller as Barry Allen/The Flash, Jason Momoa as Arthur Curry/Aquaman, Ray Fisher as Victor Stone/Cyborg and Henry Cavill returns as Clark Kent/Superman. Zack Snyder returns as the credited director for this film (along with reshoots and post-production overseen by Joss Whedon).
The following weapons were used in the film Justice League:
Heckler & Koch G36C
Gunmen who confront Wonder Woman are armed with Heckler & Koch G36C rifles. Members of London's SCO19 also are armed with the G36.
Heckler & Koch HK416
The Heckler & Koch HK416 is used by several members of "Black Clad" terrorists during the attempted museum takeover in London. One of these men attempts to knock Wonder Woman (Gal Gadot) in the head with this HK416 before she disarms him of the weapon. The Heckler & Koch HK416 is later used by "Black Clad Alpha" (Michael McElhatton).
USAF airmen guarding the facility housing the Kryptonian ship are seen carrying M4A1s.
Heckler & Koch VP9 (Tactical)
A suppressed Heckler & Koch VP9 Tactical Pistol is used by the leader of a group of terrorists, who is referred to in the credits as "Black Clad Alpha" (Michael McElhatton), during a museum takeover in London.
Metropolis Police officers are seen armed with Glock 17 pistols during a confrontation at the Superman memorial.
Smith & Wesson Model 19
Heckler & Koch MP7A1
Some of the terrorists at the film's beginning are armed with the Heckler & Koch MP7A1.
Browning M2HB machine guns mounted on US military humvees.
The Batmobile appears to have been upgraded with what appear to be twin GAU-19 machine guns.
Single Barreled Shotgun
The Russian Father (Tomi May) appears to be armed with a Single Barreled Shotgun.
12 Gauge Double Barreled shotgun
\12 Gauge Double Barreled Shotguns are seen in the hands of an SCO19 officer.
The Batmobile appears to have been upgraded with several weapons, which includes a massive cannon that resembles something like the Bofors 40mm AA gun. This weapon is mounted near the top of the cockpit.