History of Acantha-D

Acantha-D is a Legendary Rapid-Fire Grenade Launcher (Solar, Power (heavy) slot) from the Year 1 Gunsmith pool in Destiny 2.

Overview

Curated roll: Volatile Launch or Confined Launch barrel, Mini Frags or Thermoplastic Grenades magazine, and the trait Pulse Monitor (auto-reload and better handling when wounded). The intrinsic gives deeper reserves and a faster reload from empty. Made by Hakke. Elemental damage: Solar. See Adaptive Frame-style archetype notes on the weapon-type page for its weapon type.

Acquisition

A Year 1 (Destiny 2) Legendary from the Gunsmith: earn rank-up packages from Banshee-44 (Gunsmith Engrams). Like the rest of the Year 1 pool it is not craftable, has no Adept variant, and is not currently a focusing target in the sources checked; the sources I opened do not give a current sunset/reissue status beyond what is noted here.