Z-250 Directed Energy Engagement Weapon

The is a Forerunner weapon carried by Promethean Knights. It fires an unknown ammunition but is likely to be the analog to the BR85HB SR Battle Rifle or the Type-51 Carbine. So far it only appears in Halo 4.

Trivia

 * As with the Z-180 Close Combat Rifle/Asymmetric Engagement Mitigator, it seems to assemble when picked up.