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This subject is related to the Combine era.
This is a good article. Click for more information.

Cut.png The contents of this article have been cut.

The subject matter of this article contains in-development information that was cut from the final version of an official and/or canonical source and appears in no other canonical source. It may also contain incomplete information since not all cut material is publicly known.

Production information


Technical specifications
  • 8/bullet (16 when scoped in)
  • 100/grenade
  • 30 rounds
  • 1 grenade
Max ammo
  • 150 rounds
  • 3 grenades
  • Automatic
  • Semi-automatic (when scoped in)
Ammo type


Rate of fire






Used by
Game information


The OICW, also known as AR2, is a weapon cut from Half-Life 2. It can be found in the Half-Life 2 leak. It was to be used by the Conscripts (later Rebels) and the Combine Soldiers,[1][2] to be replaced in the final game by the Overwatch Standard Issue Pulse Rifle.


Early Combine Soldiers and their OICWs stationed in City 17, based on artwork by Viktor Antonov.

In the Half-Life 2 leak, the OICW, based on the real-world XM29 OICW by Heckler & Koch and Alliant Techsystems, is essentially a Pulse Rifle with a scope and a built-in grenade launcher instead of the energy ball thrower. Its recoil makes it very difficult to control past five shots in a row. However, this can somewhat be reduced by crouching.[2]

It uses medium rounds, which are also used by the AK-47, the MP5K, and the 9mm Pistol.[3]

In real life, the OICW features a grenade launcher. While not working in the leak (it is in the source code, but is disabled), it was shown working in promotional videos. It appears that its grenade function was moved to the SMG1 by the time the files were leaked, as getting close to the SMG grenades in the WC map pack map zoo_item causes the message "AR2 Grenades" to appear on the screen.[1]

Interestingly, the scope on the OICW when unzoomed is broken in-game (it shows a solid light green instead of the scope texture), while it works properly when viewed with the leak model viewer.

Screenshots featuring the OICW in Half-Life 2: Raising the Bar show an early model with a texture that made it look very damaged and used-up.[4] This texture is still in the leak files, as seen below.[2]

The retail MP7's grenade model is still named "ar2_grenade.mdl".

In the final version of Half-Life 2, the Rebel's reload animation for the AR2 Pulse Rifle is the same as the OICW's in the leak.[2]

In the Half-Life 2 files, several texture files for HUD weapon icons can be found, most of which still containing the icons for almost all of the cut weapons. The OICW is among them. It is also present in the font "HalfLife2.ttf", used for all the HUD glyphs.


List of appearances[edit]

Main games[edit]