Scale of Soirapt
From Halopedia, the Halo wiki
The Scale of Soirapt is built upon the chassis of the standard Brute plasma rifle, though features a white-and-yellow striped paint scheme over the top. Mechanically, the weapon has been upgraded with upgraded damage and heavier construction, making it a more effective melee weapon.
Following the fall of the Sacred Promissory, Jiralhanae warlords in command of post-war fleets and colonies have moved to procuring the services of expert weapon smiths across known space. The Scale of Soirapt is built in the image of Soirapt, one of the three natural satellites orbiting Doisac.