Laser designator
From Halopedia, the Halo wiki
This Unknown Laser Pointer is a United Nations Space Command piece of equipment [1].
It was first seen during the short video, Halo: Last One Standing, by a injured UNSC Marine Shock Trooper.
Trivia
- The buttstock and pistol grip are the same as featured on the SRS99D-S2 AM Sniper Rifle.