Hulk is the 2003 feature film adaptation of the Marvel Comics series that was directed by Ang Lee and starred Eric Bana as Bruce Banner, and Jennifer Connelly as Betty Ross. The film was the first feature adaptation of the Marvel comic book character, having already being made into the television series "The Incredible Hulk" (1978-1982) starring Bill Bixby. In 2008, the Hulk origin was reimagined in the film The Incredible Hulk starring Edward Norton as Banner and Liv Tyler as Betty.
1911-series pistols are not clearly seen but are holstered on the 1960s Military Police, General Ross, one of the Guerrillas in the unknown South American country, and one of General Ross's men.
Revolver
Some sort of a Revolver is seen holstered on a security guard at the nuclear research center.
Beretta 92FS
SFPD officers are armed primarily with the Beretta 92FS when they confront Hulk.
A Heckler & Koch MP5SD2 is briefly seen carried by a SWAT member when Hulk is in San Fransisco.
Shotguns
Mossberg 500
Some San Francisco PD officers are armed with Mossberg 500 shotguns when they confront Hulk.
Remington 870 Police Folding Stock
One of the Guerrillas in the unknown South American country is seen with a Remington 870 Police Folding Stock with a spare shell holder on the folding stock.
Rifles
M4A1
M4A1 carbines are seen in the hands of U.S. Army personnel as well as Atheon Security personnel.
U.S. Army soldiers use M16A2 assault rifle throughout the movie; they are seen mostly when Hulk is in San Francisco.
MGC M16 Replica
Some of the U.S. soldiers in the film can be seen with MGC M16 replica rifles.
AKMS
An AKMS is seen near the end in the hands of a Paramilitary leader (Victor Rivers) when the guerrillas harass and steal the medicine from the aid camp in an unknown South American country. An AKM is seen in the same scene in the end slung on the back of a guerrilla fighter (Thomas Rosales Jr.).
L1A1 SLR
An L1A1 SLR is seen slung on the back of a Guerrilla fighter in an unknown South American Country.
Machine Guns
M249 SAW Paratrooper with Cobray CM203 Flare Launcher
A Paratrooper version of the M249 SAW fitted with a Cobray CM203 Flare Launcher (standing in for the M203 grenade launcher) is used by one of the Atheon Security personnel. Actually firing the launcher in this configuration, with the M249's box magazine in the way, would be very difficult.
M60E3
A M60E3 machine gun is used by one of the Atheon Security personnel while fighting the Hulk. Another can be seen on a DPV.
FN MAG
FN MAGs are visible on the M1 Abrams tanks engaging Hulk in the Mojave desert.
Browning M2HB
The Browning M2HB heavy machine gun is mounted on fake M1 Abrams tanks (which are actually dressed-up British Chieftain tanks), DPVs and Humvees.
Heavy Weapons
Grenade Launcher
An unknown type of break action grenade launcher is used by a Atheon guard and consequently used to fatal effect by Talbot (Josh Lucas).
M136 AT4
Some of the soldiers wield the AT4 rocket launcher.
Seen chin-mounted on the RAH-66 Comanche helicopters in the film is the XM301, an upgraded version of the General Dynamics M197 Vulcan. Obviously since the helicopters in the film are CGI (as real flying Commanches are just a little hard to come by) these guns are not real weapons. Like all other guns in the film, the rounds simply bounce off Hulk.
General Dynamics M61A2 Vulcan
The F-22 Raptors attacking Hulk on the Golden Gate Bridge are seen firing their General Dynamics M61 Vulcans before strafing Hulk with several barrages of bombs when he plunges into the ocean.