Be creative here there are no wrong ideas.
I would like the Spartan laser to be a weapon personally, just called something different "Charge Rifle" was a name I had in mind
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Rail gun: Sniper-based weapon that charges up for a short time before firing a devastating shot. Exotic: Predator's Gaze "Can you feel the gaze of the roaring beast, oh bearer mine?" First Perk: Critical hits do increased damage Exotic Perk: Shots overpenetrate and explode enemies hit by criticals. Mag Size: 3