Destiny 2: Lightfall - Strange Quests and Fatal Mistakes.
Weapon Mods are important in Destiny 2 and can be acquired through Banshee-44 Gunsmith Vendor, Engrams, Trials of Osiris PvP matches, Nightfall Strikes, and Raids. Banshee-44 Vendor is currently experiencing a bug preventing the sale of Weapon Mods. Popular Weapon Mods for PvP and PvE scenarios include Icarus Grip, Freehand Grip, Minor Spec, Major Spec, and Boss Spec.