Accusation is an Epic Fortnite Back Bling from the Fear Response set. Accusation was first added to the game in Fortnite Chapter 3 Season 4.
The Accusation back bling can be unlocked with the purchase of the Abyss outfit for 1,500 V-Bucks or the Fear Response Bundle for 1,800 V-Bucks.
Attachments are items that come with a cosmetic when it is obtained.
Fear Response Set
Accusation is part of the Fear Response set! You can find all of the items that belong to it below.