History of Marsilion-C

Overview

Marsilion-C is a Legendary Solar Grenade Launcher made by Häkke with a Rapid-Fire Frame (5 rounds, 150 RPM). Curated roll per Destiny Game Wiki: Confined Launch, Alloy Casing, Snapshot Sights and Impulse Amplifier, with Hakke Breach Armaments as origin trait. Introduced in Season of Defiance.

Acquisition

World drop per Destinypedia; Destiny Game Wiki says open Legendary engrams and earn faction rank-up packages, or occasionally from Banshee-44. Destiny Game Wiki also mentions its weapon pattern being removed in Season of the Deep, which suggests it was craftable earlier; I did not confirm that elsewhere. No Adept version is mentioned.