CQC-class Mjolnir

The MJOLNIR Powered Assault Armor/CQC variant, also known as the Close Quarters Combat (CQC) armor, is a variant of the MJOLNIR Powered Assault Armor, designed for combat in close-quarter conditions. The variant is compatible with the Mark IV as well as the Mark V.

Development history
The CQC variant was developed alongside the CQB variant by German-based Beweglichkeitsrüstungsysteme with a central focus on improving the wearer's survivability in close-quarter engagements. By the early 2540's, facilities in Essen and Seongnam began manufacturing and testing the CQC variant for eventual deployment in the field. The CQC's Mark IV variant entered service in 2548 and saw use among SPARTAN-II and SPARTAN-III soldiers. The CQC variant was further upgraded for use with the MJOLNIR Mark V in 2551.

Design
The MJOLNIR CQC variant was the first of its kind to aid and improve the Spartans' effectiveness in close quarters combat. The armor is designed for tactical, short range battles in urban areas, and as such the CQC variant offers an improved field of visibility and heavy ballistic protection. In addition, numerous sections of the helmet supports open-port conversion - this allows the user to add any type of compatible module to the helmet to further improve functionality, allowing a Spartan to adapt to changing mission conditions on the fly. The CQC's heavy pauldrons allow a soldier to swiftly and lethally close the gap between an enemy combatant despite being under fire. The CQC can be utilized for both military operations on urban terrain (MOUT) and boarding operations aboard ships which are comprised of tight, enclosed spaces.

Despite being surpassed by the CQB in overall integration, the CQC variant still retained popularity well after its production ceased. Many still prefer CQC's less traditional open-port conversion system to allow ad-hoc modification. Some Spartans continue to use CQC instead of the newer CQB because of the versatility the CQC provides.

Helmet
Predecessor to current MJOLNIR/C variant; less rigid design allows for field upgrades. Base Price: Halo: Reach Starter.

CBRN Price: 750 cR, Sargent UA/HUL Price: 1,500 cR, Sargent Similar to the CQB in Halo 3, the CQC helmet is unlocked by default in the armory. The helmet's design bares similar resemblance to the Mark VI helmet and the limited production helmet on the Mark IV. Two attachments are available for the helmet: the first adds a Chemical, Biological, Radiological, and Nuclear Module (CBRN) for operations in hazard zones. The second adds an Up-Armor plate with a Hardened Uplink Module on the right side (UA/HUL) for MILINT acquisition.
 * Description: Entered service in 2548; standard equipment for boarding actions and MOUT.
 * Description: For operations in hazard zones.
 * Description: Up-armored variant with hardened uplink module for MILINT acquisition.

Shoulder
Price: 20,000 cR, Lt. Colonel

The CQC pauldrons are rectangular and flat in shape, and have two smaller "squares" on the top and bottom. These shoulders go down to about the elbow. They can be seen at the rank of Major, but require the rank of Lt. Colonel to be bought.
 * Description: Developed and tested at UNSC facilities in Essen and Songnam, respectively.

List of appearances

 * Halo: Reach
 * Halo 5: Guardians