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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-Truly semi-automatic weapons of some sort. Like a lighter version of a Scout Rifle, with less impact but fires as fast as you can pull the trigger. And/or a handgun that operates in the same fashion. -A laser-designation device used to call in an air-strike with your dropship provided you are outdoors.