The Type-50 Directed Energy Rifle/Heavy or the T50 DER/H,[2] otherwise known as the Concussion Rifle, is a Covenant infantry weapons. The T50 DER/H fires explosive bolts of superheated plasma. When the plasma bolt hits a surface, it produces area-of-effect damage and a small "kick" to its users and objects. This kick is not, however strong enough to knock away those under the effect of Armor Lock.

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