Knight blade

The knight blade is a UNSC weapon attachment that is used to counter personnel in close quarters combat, but additionally can inflict heavy damage and knockback against vehicles. It is presumably based off of the same technology that the Promethean Knights use.

Gameplay
If a loadout weapon has this attachment equipped, it will display different melee animations and also has increased lunge range. It can destroy a Type-54 Ghost in four attacks. It is noted to increase melee effectiveness, damage, and knockback against vehicles.

This attachment can only be applied to the base variants of the assault rifle, battle rifle, and DMR.

List of appearances

 * Halo 5: Guardians