Portal Gun

The Aperture Science Handheld Portal Device (also known as the Portal Gun, ASHPoD or ASHPD) is the experimental tool designed to place two portals that objects can pass through. This is the primary tool players are equipped with to complete Test Chambers.

The Handheld Portal Device is designed to create and place portals on any white surface that is immobile, flat and large enough. When the device is fired, a colored projectile will be emitted from the barrel. If the projectile strikes a valid surface, a portal of the corresponding color will be formed. If a portal of the other color is already placed, these two portals will be linked. If a portal of the same color is already placed, it will be closed and the new one will be used instead, limiting the player to the use of only two portals at a time. Nothing will happen if a portal is shot at an enemy or other object. The glass chamber and a light on the top of the device will glow with the color of the previously placed portal.