The Hurt Locker is a 2008 film about a U.S Army explosives and ordnance disposal (EOD) team set in Iraq in 2007. The following weapons can be seen in this film:
A Beretta 92 (distinguished by its rounded trigger guard and butt-mounted magazine release) is used by Staff Sergeant William James (Jeremy Renner), most prominently when James stops an Iraqi taxi.
Beretta 92FS
For the rest of the film, James and Sergeant J.T Sanborn (Anthony Mackie) both use the Beretta 92FS pistol, as noted by the hocked trigger guard and slide-mounted safety.
Glock 19
What appears to be a Glock 19 pistol is carried by the leader of the British private military contractors (Ralph Fiennes).
Rifles
M4A1 Carbine
M4A1 carbines are used by Staff Sergeant William James (Jeremy Renner), Sergeant J.T Sanborn (Anthony Mackie) and Specialist Owen Eldridge (Brian Geraghty), as well as by other American soldiers. The carbines are equipped with a variety of sights and other attachments. Note that throughout the film, their buttstocks interchange between the 3rd and 4th generation stocks (even in the same scenes).
M16A4
A few American soldiers carry M16A4 rifles (possibly airsoft replicas, by the unnecessary screws in the A2 stocks), fitted with reflex sights and other attachments.
Kalashnikov Variants
AKM
AKM rifles are carried by Fedayeen soldiers and insurgents.
MPiKMS 72
A MPiKMS 72, an East German version of the AKMS with plastic handguards and a side-folding stock, is seen slung over the shoulder of the Iraqi police officer that talks to SSgt James about the car bomb at the UN compound.
Customized AKMS
Customized AKMS rifles with RIS foregrips and reflex sights are carried by most of the British private military contractors.
Barrett M107
A Barrett M107 (not a M82 as noted by the full-length accessory rail) is used by the private contractors to respond to an insurgent ambush, and is later used by Sergeants James and Sanborn to shoot several of the attackers. It should be noted that Sanborn and the other EOD members know how to operate a Barrett, since it can also be used for removing IED's from afar with its anti-materiel purposes.
FPK/PSL Sniper rifle
A FPK / PSL Sniper Rifle is used by an insurgent sniper who ambushes the EOD team and the private contractors in the bush. Despite the range and the type of rifle used, the sniper is able to inflict several casualties.
Machine Guns
Browning M2HB
Browning M2HB machine guns are mounted on top of U.S Army Humvees, including that of the EOD team.