History of Fusion Rifle

Overview

Fusion rifles must be charged before they fire, then release seven beams in quick succession. The bolts travel rather than hit instantly, so players can pre-charge and sweep across several targets. They are medium-range weapons, between Shotguns and long-range weapons, and in the original Destiny are secondary weapons.

Archetypes

Destinypedia lists four: fast charge with lower impact, a balanced middle option, slower charge with extended range, and a high-impact frame with the slowest charge. Sources describe the original game, so check current archetypes in Destiny 2.