Raza's Ten Rings fighters carry Heckler & Koch G36K assault rifles, most fitted with G36C-style carry handles. In the film, Tony Stark (Robert Downey Jr.) learns that Obadiah Stane has been selling Stark Industries weapons to Raza's men, making them better armed than any of the other jihadist factions in Afghanistan and Pakistan. The various assault weapons used by Raza's men, including the H&Ks, are therefore supposed to be Stark Industries products. It is also possible that in the Iron Man universe, Stark Industries obtained a license from Heckler & Koch to produce G36 and UMP-series weapons in the U.S.
Heckler & Koch G36C
Several of Raza's men are also armed with the compact version of the G36, the Heckler & Koch G36C, also outfitted with many accessories to disguise their origins. During the escape from the Ten Rings' camp, Yinsen (Shaun Toub) grabs a G36C dropped by one of the fighters and runs towards Raza's men firing wildly, trying to divert attention from Stark until the suit is powered up and he can use it to fight his way out.
Heckler & Koch AG36
Raza (Faran Tahir) is seen with a H&K G36K fitted with a Heckler & Koch AG36 grenade launcher, which he fires at Stark in the prototype Iron Man armor, but misses and it knocked out by Stark's missile instead.
Heckler & Koch UMP40
Several of Raza's men are armed with the .40-caliber version of the Heckler & Koch UMP (they can be recognized as the .40-caliber model because the magazines don't have a see-through slit running down the side) with tactical outfitting.
SIG SG 552
One of Raza's men is seen armed with a SIG SG 552 with tactical outfitting.
CAR-15 rifle
Some of the Ten Rings fighters seem to carry an XM177 lookalike rifle, sometimes referred to as a CAR-15, to differentiate it from the real XM177 series of rifles.
M4A1
USAF Security forces in Afghanistan are seen armed with M4A1 carbine assault rifles. Also used by Woodland BDU outfitted Security at the Airbase when Stark returns to the U.S.
No, the other guns panned by are reversed too. So unless they are all lefties, the shot was reversed. A right handed shooter reversed becomes a left handed shooter. -GM
M26 Modular Accessory Shotgun System
Held by one of Raza's men is an M4A1 with a Magpul Buttstock and an M26 Modular Acessory Shotgun System (MASS) fitted under the barrel. While the carbine's grip appear to be removed, close inspection reveals his sleeve is in the way.
USAF Security Forces in Afghanistan used FN M240B machine guns mounted on top of their Humvees.
Browning M2 M1921
USAF Security Forces in Afghanistan use Browning M2 M1921 mounted on top of their Humvees. One of the Ten Rings fighters is seen using an M2 when Stark escapes in his prototype Iron Man suit, firing it at him before being burned by his flame throwers. Hammered steel would not likely stop a .50 caliber round or near any round fired at him, but perhaps Stark was smart enough to build it stronger. In a deleted scene, Col. James 'Rhodey' Rhodes (Terrence Howard) mans a .50-cal when the gunner is killed during the ambush.
IMI Galil MAR
One of Raza's men is seen armed with a IMI Galil MAR, the most compact version of the Galil assault rifle.
Heckler & Koch USP
One of the Ten Rings members attempts to shoot Stark in the head with a Heckler & Koch USP when his arm gets stuck in the wall, but the round deflects off the armor and hits him instead. Abu Bakaar (Sayed Badreya), the leader of the Ten Rings guerrillas is also seen with a USP at his hip in a holster.
Glock 17
The SHIELD agents escorting Pepper Potts (Gwyneth Paltrow) to arrest Obadiah Stane (Jeff Bridges) are armed with Glock 17 pistols, which they fire at Stane, now "Iron Monger", but prove useless and they are easily dispatched.
FGM-148 Javelin
FGM-148 Javelin anti-tank missile launchers can be seen in the Ten Rings' camp.
BGM-71 TOW
BGM-71 TOW anti-tank missile launchers can be seen in the camp.