Mjolnir Powered Assault Armor/Ranger

The Mjolnir Powered Assault Armor/Ranger, also called Ranger armor, is a Mjolnir [GEN2] variant used by SPARTAN-IV personnel. Manufactured by Imbrium Machine Complex, Ranger armor is incredibly versatile but its strength is the ability to operate independent of standard Spartan team configurations. This lone-wolf approach to armor infrastructure is gaining ground among the few ONI/D-6 operators currently in the field.Halo Waypoint - Halo 4 Intel - Armor: RANGER
The base armor can be unlocked by mastering the Combat Opportunity commendation and the Strike skin can be unlocked by mastering the Protector commendation. 
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Ranger