- ROBERTO jh
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- Fabled Heroic Member
Well, two problems.
1) Modern guns themselves can fire in space, let alone guns built for that in the future.
2) Cole Protocol isn't the only situation a gun in Halo is fired in space. Happened in Halo 2, Halo Reach, the Halo Wars prequel graphic novel, Contact Harvest and I think Fall of Reach. So it's been pretty well established by now that even if modern guns couldn't fire in space, Halo weapons canonically can.