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The Hazardous Environment Combat Unit Rocket Propelled Grenade, commonly referred to as the HECU Rocket Propelled Grenade, and commonly abbreviated to the HECU RPG or RPG, is a laser-guided rocket launcher effective at destroying both flying and immobile targets.


  • The RPG fires a powerful rocket that can either be guided towards a moving target using the integrated laser, or fired without the laser, a method known as dumb-firing is excellent for destroying powerful immobile enemies like the M1A1 Abrams.
  • Despite being found in HECU-controlled areas, this weapon is never seen to be used by HECU soldiers (besides Adrian Shephard). However, rockets for it can be found scattered throughout HECU-controlled areas, such as in the surface areas of Black Mesa, as seen in the chapter Surface Tension.
  • In Half-Life, the weapon is first acquired in a supply cache in the cliff section of Surface Tension. An AH-64 Apache appears soon after, giving Gordon a good opportunity to test its capabilities.


  • The RPG is primarily used to destroy heavily-armored vehicles such as the M1A1 Abrams tank, the M2A3 Bradley armored fighting vehicle and the AH-64 Apache helicopter. It usually takes about three rockets to the turret to destroy the tanks, while it takes just two rockets to destroy the Apache.
  • It can also be used to destroy a large group of enemies with ease, as it has a large damage radius from the point of impact. HECU Soldiers, Alien Grunts and Vortigaunts will try to run away from it, but rarely escape in time.
  • The RPG is one of the few weapons that can damage a Gargantua.
  • The RPG's laser can be used to guide rockets fired from enemy vehicles, an effective method of conserving ammunition for other more powerful targets, and often useful for destroying the vehicle with its own rockets.[2]
  • The RPG is one of few weapons that can be fired underwater, making it easier to fight the Ichthyosaur. However, the rocket becomes much slower if used underwater.
  • On Xen, the RPG is effective against the Gonarch. It takes only a few rockets for the Gonarch to try to escape to another part of its arena.

Behind the scenes


  • The RPG resembles the German-made Armbrust Rocket Launcher.[3]
  • The early model for the RPG resembles the Tau Cannon.
  • The early RPG model seems to be a cross between a British PIAT Rocket Launcher and an American M1 Bazooka.
  • HD version of Rocket ammo box is a mere retexture of the model.




List of appearances