Energy dagger

The energy dagger is an energy melee weapon employed by the Sangheili. It is mounted on the wrist of most Sangheili combat armor, and is used to carry out assassinations.

Design details
The design bears much resemblance to the Type-1 Energy Weapon/Sword. Unlike the Energy Sword, however, it ends in a single point as opposed to the dual prongs of the Energy Sword. It appears to be mounted to a device worn on the wrists of the user. It is possible to use two daggers simultaneously, with one on each wrist.

Trivia

 * When playing a custom game (normal or Firefight), the dagger will not appear for Elite-on-Spartan assassinations, but the dagger will appear if the same match is watched in Theater mode.
 * This slightly resembles a Hidden Blade from Assassin's Creed, albeit made of laser.

List of appearances

 * Halo: Reach