ARMA 2 Operation Arrowhead is the follower of the most realistic game in the world, called ARMA 2. This stand-alone expasion pack uses all the weapons and vehicles of ARMA 2 and some new like the Chinook and newer versions of HMMWV's.

With the help of an editor, you can, like in ARMA 2, create your own missions. The script-language is still SQF.
It was easy to find all used items because they've used the real names of these.
Bohemia Intercative promotes the ralism of the game. Some players feel like in a movie while they play this game. It is a simulation and not so fast as other shooter like Battlefield Bad Company 2 or Call Of Duty Modern Warfare 2.
 

See here some features of this expansion pack:

"Three years after the confl ict in Chernarus, portrayed in the original Arma II, a new fl ashpoint in the Green Sea region heats up and coalition forces led by the US Army are sent to Takistan to quickly restore peace and prevent further civilian casualties.
Players will enlist into various roles within the US Army, from basic infantrymen, through special operatives, to pilots and tank crew in this new installment in the award winning line up of military simulators for PC from Bohemia Interactive.
 eater of war is known, objectives are set, but it is down to the brave soldiers in the fi eld to make a diff erence. Players will face some fi erce battles and tough choices in this
new confl ict, coming to your PC in 2010."

2 NEW GAME ENVIRONMENTS

Takistan: 160 square km of Central Asia modeled with extreme precision using real world data
Zargabad: 70 square km of extremely realistic environment including full areas of dense urban CQB confl icts.

DEEP STORYLINE

 The chance to enlist in various roles within the US Army from basic infantryman to pilot and tank crew.

NEW FACTIONS

Amazing variety of local army and guerrillas.

NEW WEAPONS AND VEHICLES

AH-64 Apache, MH-47 Chinook, AH/MH-6 Littlebird, Stryker variants, M3 Bradley, T-55, BTR-60, M113, UH-1H, FN FAL, FN SCAR variants and many more.

ARMA II WARFARE MODE

Improved large scale multiplayer experience with elements of real time strategy gameplay.

STANDALONE RELEASE

Operation Arrowhead does not require the original ARMA II.

Pistols

• Colt M1911A1
• Beretta M9
  • Beretta M9 SD
• Makarov PM
  • Makarov SD

 

Assault Rifles

• AK-107
  • AK-107 GP25
  • AK-107 GP25 PSO
  • AK-107 PSO
• AK-74
  
  • AK-74 GP25
• AKS
  • AKS-74 Kobra
  • AKS-74U
  • AKS-74UN Kobra
• AKM
• M16A2
  
  • M16A2 M203
  • M16A4
  • M16A4 RCO
  • M16A4 M203
  • M16A4 M203 RCO
• M4A1
  
  • M4A1 QDS
  • M4A1 QDS CAMO
  • M4A1 M203 RCO
  • M4A1 CCO
  • M4A1 M203 Holo
  • M4A1 M203 Holo SD
• M4A1 M203 SOPMOD SD CAMO
• G36
  
  • G36C
  • G36C SD
  • G36K
• XM8
  
  • XM8 M320
  • XM8 Marksman
  • XM8 Compact
  • XM8 SAW

Machine Guns

• M240
• M249 SAW
• Mk48 Mod 0
• PKM
• RPK-74

 

Sniper Rifles

• CZ 550
• DMR
• KSVK
• M107
• M24
• Mk12 SPR
• SVD Dragunov

 

Special Purpose Weapons

• MP5
• MP5SD6
• PP-19 Bizon
• VSS Vintorez

 

Shotguns

• Benelli M1014
• Saiga 12K

 

AT/AA Launchers

• FGM-148 Javelin
• FIM-92F Stinger
• Igla 9K38
• M136
• RPG-7V
• RPG-18 Mukha
• SMAW
• Strela-2 9K32

 

Mounted Weapons

• AGS-30 ?
• DShKM
• Kord
• Browning M2
• MK-19 ?
• ZU-23

Static Launchers

• Igla AA Pod ?
• AT-9K115 Metis-M ?
• Stinger AA Pod ?
• SPG-9 ?
• TOW

Artillery

• Podnos 2B14 ?
• M252 Mortar ?
• D-30 Howitzer ?
• M119-A1 Howitzer

Vehicles

ARMA 2 has many vehicles. Some of these are civil and not in our interest. So we have only listed military vehicles.

Tracked

• 2S6M Tunguska
• M270 MLRS
• AAV P7A1
• BMP-2
• BMP-3
• M1A2 TUSK
• T-72
• T-90
• ZSU-23 Shilka

Wheeled Military Vehicles

• BRDM-2
• BTR-90
• Vodnik (HMG)
• BM-21 Grad
• HMMWV (M240)
• LAV-25
• MTVR
• UAZ
• Ural (ZU-23)

Helicopters

• AH-1Z
• Ka-52
• MH-60S
• Mi-8MTV-3
• Mi-24D
• UH-1Y

Ships and Boats

• A-10
• AV-8B (Fighter)
• C-130J
• F-35B
• MQ-9 (drone)
• MV-22
• Pchela-1T (drone)
• Su-34 (Fighter)
• Su-25

Boats

• PBX
• RHIB

New to this expansion (know yet):

• AH-64 Apache
• MH-47 Chinook
• AH/MH-6 Littlebird
• Stryker variants
• M3 Bradley
• T-55
• BTR-60
• M113
• UH-1H
• FN FAL
• FN SCAR variants