History of Purpose

Overview

Purpose is a Legendary weapon: Scout Rifle (Lightweight Frame), Kinetic, kinetic slot.

The curated roll is Extended Barrel, Smallbore or Fluted Barrel; Slideshot or Hip-Fire Grip; Explosive Payload. Fire rate is 200 RPM. Introduced in Season 2, in the Curse of Osiris era. Its default shader matches Benevolence of the Nine.

Acquisition

Trials of the Nine rank-up package from the Emissary of the Nine (Season 2 Trials of Osiris). Bungie's item text says to "complete Trials tickets and earn rank-up packages from the Emissary of the Nine", which is the Trials rank-up reward track.

It is a legacy-style reward weapon and is not documented as craftable or Adept. See also Emissary of the Nine and the Crucible for the PvP context.