"Fusion rifles" are a type of advanced futuristic weapon that use nuclear fusion to fire powerful energy blasts and can cause a lot of damage. Full definition
He's selling an exotic fusion rifle called Merciless and it does quite a decent amount of damage in the raid. (gamechup.com)
The Sleeper Simulant, an exotic linear fusion rifle that made its debut in the original «Destiny,» is a powerful fan - favorite weapon. (techtimes.com)
Best Weaponry — Destiny 2 Destiny fans were disappointed with the way Bungie reconfigured the weapon loadouts for the highly anticipated sequel, but that didn't diminish their desire to seek out interesting exotic weapons like the powerful Sunshot hand cannon, Merciless power fusion rifle, and Sweet Business auto rifle. (gameinformer.com)