Covenant Concussion Rifle
The Covenant Concussion Rifle was developed as an anti-Infantry suppressor weapon.
Direct Energy Heavy/Concussion
This is essentially the Covenants answer to a Imperial Auxiliary Grenade Launcher, with stronger damage and concussive force compared to a frag round , but without the sheer armor piercing ability of a Krak round. The "Plasma" is stored in battery chambers meaning that it reloads rather then recharges, this makes it much more efficient then their Imperial Counterparts.