User blog comment:Warmachine375/Gun-Gun Weapons possibility?/@comment-73.136.18.37-20150530152820/@comment-25279497-20150530174949

Phantom: In-universe, there theType-52 Mauler, which is a Brute-centric weapon meaning it didn't see much action until the Great Schism.

Out: Bungie had idea for covenant shotgun pre-CE but scrapped obnly to bring it back for Halo 3.