History of Command Frame IV

Overview

Command Frame IV is the top tier of the Command Frame intrinsic on Choir of One, an Exotic auto rifle. Its in-game description reads: extended-range, heavy-caliber projectiles at a reduced rate of fire, with increased precision damage when aiming down sights.

Unlocking

Choir of One is an Episode: Echoes Exotic that you get by completing the Encore Exotic mission. The Command Frame tiers are unlocked by finding secrets within Encore. Command Frame IV comes after Command Frame II and Command Frame III in that chain.

Notes

The description is the same as the base frame. Each tier is an upgrade to the same intrinsic rather than a separate perk slot.