UA attachments

A Spartan equipped with various UA attachments: the ARMET visor attachment, a pair of Agathius shoulder pads, the M550D Halfplate chest piece, and the Type II-A1 Buckler wrist attachment.

UA, short for up-armored, is a series of supplemental armor attachments and accessories compatible with the MJOLNIR Powered Assault Armor and battle dress uniforms worn by UNSC infantry.

Overview

Design details

The UA category encompasses various attachments that are compatible with the helmet, shoulders, chest, wrist and thigh components of the MJOLNIR Mark V and MJOLNIR [GEN3] armors. The UA series are typically armor reinforcements with different purposes depending on the modules. They can either come as a singular module or as a kit.

Usage

Many of the UA pieces are not exclusive to the MJOLNIR system, but are in use by regular UNSC Army or Marine troops as well. Some UA attachments are designed for specialized personnel, like Spartans tasked with breaching or members of Spartan containment teams.

Known modules and configurations

Helmet attachments

The ARMET module on a Mark VII helmet.

ARMET

The ARMET is a module for high-threat response on the MJOLNIR Mark VII helmet, adding a faceplate on the helmet's visor. It is manufactured by Chalybs Defense Solutions.

The ILLUS module on an ISR helmet.

ILLUS

The ILLUS is a module for high-threat response on the ISR-class Mjolnir helmet, adding a faceplate on the helmet's visor. It is manufactured by Chalybs Defense Solutions.

The MAUROS module on a Mark V Zeta helmet.

MAUROS

The MAUROS is a module for high-threat response on the Mark V Zeta helmet. It adds a faceplate, integrated with Project THEIA technology, on the helmet's visor. It is manufactured by Chalybs Defense Solutions.

The Type B1 on a Mark V [B] helmet.

Type B1

The Type B1 is a module manufactured by Materials Group for enhancing helmet armor.

The B1 module has been observed to be compatible with the following helmets:

• Air Assault
• Commando
• Mark V [B]
• Pilot
• Security

The Type C1 on a Mark V [B] helmet.

Type C1

The Type C1 is a module manufactured by Materials Group for enhancing helmet armor.

The C1 module has been observed to be compatible with the following helmets:

• Air Assault
• CQB
• CQC
• EVA
• Mark V [B]

The Type E3 on a Mark V Grenadier helmet.

Type E3

The Type E3 is a module manufactured by Materials Group for enhancing helmet armor.

The E3 module has been observed to be compatible with the following helmets:

• Grenadier
• EOD
• Indomitable
• Mark V
• Mark V [B]
• Mark VI
• Scout

The Type O5 on a Mark V [B] helmet.

Type O5

The Type O5 is a module manufactured by Materials Group for enhancing helmet armor.

The O5 module has been observed to be compatible with the following helmets:

• ODST (MJOLNIR)
  • ODST armor/HVY
• Operator
• JFO
• Mark V [B]
• Recon

Shoulder attachments

UA/CMA SN5 Type 11 shoulder on the RAKSHASA-class Mjolnir.

UA/CMA SN5 Type 11

The UA/CMA SN5 Type 11 shoulders were manufactured on the 24th century for Colonial Military Authority operatives assigned to deal with pirates, marauders, and insurgents. By 2560, the UA/CMA SN5 Type 11 shoulders were made compatible with MJOLNIR armor and used by Spartan-IV operatives. These shoulders are also popular with the Venezian Militia.

The WAYLAND shoulder on the Mark VI armor.

WAYLAND

The UA/WAYLAND shoulders consist of munitions bandoliers strapped to the regular GEN2 Mark VI left shoulder. The right shoulder is stripped from its shoulder plate, and replaced with a Combat knife.

Chest attachments

Ajka on the Mark IV armor.

Ajka

The Ajka is a chest plate manufactured by the Materials Group.

The D0-01-CCR Breaching Kit on the Mark V [B] armor.

D0-01-CCR Breaching Kit

Manufactured by Beweglichkeitsrüstungsysteme, the D0-01-CCR Breaching Kit (also designated as “Collar/Breacher”) is an armored yoke which doubles as a carrier for additional shotgun shells.

D0-06-FGM Tactical Kit on the Mark V [B] armor.

D0-06-FGM Tactical Kit

Manufactured by Beweglichkeitsrüstungsysteme, the D0-06-FGM Tactical Kit (also designated as “UA/Multi-Threat”) is a multi-threat up-armor module kit that adds a supplemental torso armor. It is compatible with most MJOLNIR models and variants.

The Double Guard chest plate on the Mark VII armor.

Double Guard

The Double Guard up-armor attachment is a Misriah Armory-licensed up-armor plating based on the armor plate used by the Banished's Unggoy Mules. It can be manufactured using any industrial minifac.

The GRT78 chest rig on the Mark VI armor.

GRT78 chest

The UA/GRT78 chest consists of a heavily-armed chest rig compatible with GEN2 MJOLNIR Powered Assault Armor/Mark VI. It has numerous bandoliers and pouches for ammunition storage.

The GRT78 chest rig on the Mark VI armor.

KOTIN chest

The UA/KOTIN chest consists of a heavily-armoured Titanium-A chest rig compatible with GEN2 MJOLNIR Powered Assault Armor/Mark VI. It has numerous grenade pouches and munitions packs.

M550D Halfplate on the Mark VII armor.

M550D Halfplate

Manufactured by Beweglichkeitsrüstungsysteme, the M550D Halfplate is a set of up-armored plating designed to minimize its impact on the wearer's mobility.

M557 Jackplate on the Mark VII armor.

M557 Jackplate

Manufactured by Beweglichkeitsrüstungsysteme, the M557 Jackplate is a module of up-armored plating for Spartans tasked with breaching and urban warfare.

Malachit Plate on the Mark VII armor.

Malachit Plate

Manufactured by Beweglichkeitsrüstungsysteme, the Malachit Plate is an up-armored plating considered the defining standard for assault roles.

NERA-ATS on the Mark IV armor.

NERA-ATS

Manufactured by Beweglichkeitsrüstungsysteme, the NERA-ATS is an adaptation of a set of NERA tiles fabricated as vehicle protection kits, reconditioned as a chest piece as part of the Paladin project.

NERA-SOFAS on the Mark IV armor.

NERA-SOFAS

The NERA-SOFAS chest plate is a non-energetic reactive armor and presumably comes in two forms: a variant manufactured by the UNSC and a variant recreated by the crew of the UNSC Spirit of Fire while on Installation 00. The variant made by the Spirit of Fire's AI Isabel features a mix of old and new ERA technologies.

Relikt Cuirass on the Mark VII armor.

Relikt Cuirass

Manufactured by Vakara GesmbH, the Relikt Cuirass is a set of armor reinforcements created to meet the requirements of Spartan containment teams.

Ringeck on the Mark IV armor.

Ringeck

The Ringeck duelist turning plate presumably comes in two forms: a variant manufactured by the Materials Group and a variant recreated by the crew of the UNSC Spirit of Fire while on Installation 00. The variant made by the Spirit of Fire features almost impercetible revisions made by Isabel, which makes the Ringeck compatible with modern shield-shaping waveguides.

Shield Rapid Effect System on the Mark IV armor.

Shield Rapid Effect System

Manufactured by the Watershed Division, the Shield Rapid Effect System was aiming to create a chest plate with an electromagnetic field generator capable to deflect or dissipate plasma projectiles. However, the SRES project was cancelled in 2528 due to the colossal power requirements and limited effectiveness outside lab conditions; this led to existing SRES units being retooled to function as emergency power backups.

Shield Improvement Module - Alpha on the Mark V [B] armor.

Shield Improvement Module - Alpha

The Shield Improvement Module - Alpha (SIMA; also designated as UA/Base Security) was an upgrade manufactured by Materials Group. The module itself is an armored housing that improves the wearer's energy shielding, but it never reached successful deployment. However, the armored housings themselves quickly found a new use among Spartan-IIIs.

TAAP on the Mark V [B] armor.

TAAP

Manufactured by SinoViet Heavy Machinery, the TAAP module (also designated as "HP/HALO") is a supplemental yoke that provides an extra layer of collar protection constructed from warship-grade Titanium-A. The module features hard points for High-Altitude Low-Opening gear.

Tarnok on the Mark IV armor.

Tarnok

The Tarnok is chest piece manufactured by the Materials Group.

TSA Prototype on the Mark V [B] armor.

TSA Prototype

Manufactured by Chalybs Defense Solutions, the TSA Prototype (also designated as "UA/Counterassault") adds a testbed thermal-superconducting plate, designed to provide additional protection against plasma-based weaponry, while increasing storage capacity.

VAUNTLOCK on the Mark V [B] armor.

VAUNTLOCK

Manufactured by Materials Group, the VAUNTLOCK ensemble is an armored yoke which adds an early-model VAUNTLOCK power pack, which can temporarily power Mjolnir shields if the suit's fusion power plant fails. It is integrated into the INDOMITABLE-class Mjolnir.

X800 Plate on the Mark VII armor.

X800 Plate

Manufactured by Korolev Heavy Industries, the X800 Plate is the company's testbed for methods of stacking NxRA plates and electromagnetic shielding, aiming to counter both Covenant and Forerunner weaponry.

Wrist attachments

The Buckler wrist attachment.

Buckler

This Buckler module adds a supplementary armor for wrist protection.

P1DA Bracer on the Mark V [B] armor.

P1DA Bracer

The P1DA Bracer adds a supplementary armor for forearm and wrist protection. It is manufactured by Beweglichkeitsrüstungsysteme. It is integrated into the INDOMITABLE-class Mjolnir.

P1DA Bracer on the Mark VII armor.

Type II-A1 Buckler

The Type II-A1 Buckler adds a supplementary armor for protection, though there are false rumors that it contains an energy shield generator. It is manufactured by Materials Group.

Thigh attachments

Minot belt on the Mark IV armor.

Minot

The Minot is an armored belt manufactured by the Materials Group.

S-Plate on the Mark VII armor.

S-Plate

The S-Plate is manufactured by Korolev Heavy Industries, and its considered a component of a strategic protection plan.

TYPE CHOBHAM on the Mark V [B] armor.

TYPE CHOBHAM

The CHOBHAM module adds ceramic composite armor plates for additional thigh protection. It is manufactured by Chalybs Defense Solutions.

The NxRA plate.

NxRA

The NxRA plate adds non-explosive reactive armor plates for additional thigh protection. While the module is compatible with the MJOLNIR armor, it was also employed on the cross-branch Battle Dress Uniform, which was adapted into the UNSC Army BDU, the UNSC Marine Corps BDU, and a variant of the ODST armor.

In-game information

Halo 3 MCC

The UA attachment is built into the ODST armor/HVY armor, unlockable in armor customization in the Series 6: Raven progression system.

Halo 2: Anniversary

Several UA attachments are available for unlock in Halo 2: Anniversary, as of the Series 9 update.

Shoulders	Description	Unlock requirements (Halo 2: Anniversary)
UA/GRT78	More armor, additional illumination, and plenty of extra ammo.	The Exchange
UA/KOTIN	The highest grade of Titanium-A plate to meet threats head-on.	The Exchange
UA/WAYLAND	Some blows can only be turned, not avoided.	The Exchange

Halo: Reach

All UA variants of armor types can be unlocked in the Halo: Reach's Armory through the game's purchase system via the use of cR. In Halo: The Master Chief Collection, the UA variants of armor types are attainable in the Season 1: Noble progression system.

Helmets

Most of the helmet variants available in Halo: Reach have an up-armored upgrade, sometimes coupled with other external helmet additions, such as the UA/HUL attachment to the Mark V [B] helmet. UA helmet attachments consist of reinforced metal plates or bracers attached to the helmet's forehead to give better protection to the wearer in combat.

• 

  The B1 UA attachment variant, available on Mark V[B], Pilot, and Security helmets.

• 

  The C1 UA attachment variant, available on CQC, Air Assault, EVA, and CQB helmets.

• 

  The E3 UA attachment variant, available on EOD, Grenadier, Mark V, and Mark VI helmets.

• 

  The O5 UA attachment variant, available on ODST, Operator, JFO, and RECON helmets.

• 

  The UA attachment variant exclusive to Commando helmet, alongside a CNM.

Shoulders

Shoulders	Description	Unlock requirements (Halo: Reach)	Unlock requirements (Halo: MCC)
UA/Multi-Threat	A trade-off between increased protection and additional mass.	Corporal, 2,000 cR	Series 1, Tier 23 ( 1)
UA/Base Security	Lightweight supplemental shoulder armor.	Major, 2,000 cR	Series 1, Tier 53 ( 1)

Chest

Chest	Description	Unlock requirements (Halo: Reach)	Unlock requirements (Halo: MCC)
UA/Counterassault	Supplemental Armor, Torso, MJOLNIR Mk. V; with increased storage capacity.	Recruit, 600 cR	Series 1, Tier 14 ( 1)
UA/Counterassault [R]	The enemy paid a higher price.	N/A	Series 5, Tier 90 ( 1)
UA/ODST	Many technologies initially developed for MJOLNIR have seen widespread adoption.	Warrant Officer, 750 cR	Series 1, Tier 41 ( 1)
UA/Base Security	Keep it simple; leave everything you don't absolutely need at the CP.	N/A (Unused)	Series 1, Tier 17 ( 1)
UA/Base Security [W]	Bringing grenades to a gunfight.	Halo Waypoint exclusive: reach Waypoint Career Milestone 30 and unlock the Yes, Sensei achievement.	Series 1, Tier 31 ( 1)
UA/Multi-Threat	Supplemental Armor, Torso, MJOLNIR Mk. V.	N/A (Unused)	Series 1, Tier 18 ( 1)
UA/Multi-Threat [W]	Let's blow some stuff up.	Halo: Reach pre-order bonus.	Series 1, Tier 32 ( 1)

Wrist

Wrist	Description	Unlock requirements (Halo: Reach)	Unlock requirements (Halo: MCC)
UA/Buckler	Supplementary wrist protection.	Recruit, 5,00 cR	Series 1, Tier 32 ( 1)
UA/Bracer	Supplementary forearm protection.	Recruit, 10,000 cR	Series 1, Tier 42 ( 1)

Utility

Utility	Description	Unlock requirements (Halo: Reach)	Unlock requirements (Halo: MCC)
UA/CHOBHAM	Supplemental armor, composite.	Recruit, 30,000 cR (Tactical/Hard Case must be purchased)	Series 1, Tier 51 ( 1)
UA/NxRA	Supplemental armor, reactive, non-explosive.	Major, 40,000 cR (Tactical/Hard Case must be purchased)	Series 1, Tier 57 ( 1)

Halo 5: Guardians

The UA variant of the Grenadier helmet, the Collar/Grenadier [UA] chest piece, and the UA/Bracer wrist attachments are built into the INDOMITABLE-class Mjolnir, unlockable in armor customization through the Requisition system.

Halo Infinite

The UA variants of helmets and armor types return in Halo Infinite, unlockable in armor customization.

Mark VII armor core

Helmet Attachments

Helmet Attachments
Helmet Attachment	Manufacturer	Lore	Compatible Helmets	Rarity	Unlock Requirements
UA/ARMET	Chalybs Defense Solutions	Up-armored MK VII faceplate for high-threat response.	Mark VII	Epic	Season 01: Heroes of Reach Battle Pass level 98 (Free)
UA/Illus	Chalybs Defense Solutions	Up-armored faceplate for high-threat response.	ISR	Epic	Purchase "ISR" Bundle from the Shop for 1,000 cR
UA/MAUROS	Materials Group	THEIA-enhanced up-armored faceplate for high-threat response	Mark V Zeta	Legendary	Tactical ops event pass level 10 (free)

Chest

Chests v • d • e
Chest	Manufacturer	Lore	Rarity	Unlock Requirements
UA/M550D Halfplate	Beweglichkeitsrüstungsysteme	Up-armor set, specced for minimal impact on Spartan mobility.	Rare	Season 01: Heroes of Reach Battle Pass level 89 (Free)
UA/Malachit Plate	Beweglichkeitsrüstungsysteme	The defining standard in assault- up-armor plating.	Epic	Purchase "Stormfall Armor Set" Bundle from the Shop for 1,200 cR
UA/M557 Jackplate	Beweglichkeitsrüstungsysteme	Up-armor module for Spartans tasked with breaching and urban warfare.	Rare	Season 01: Heroes of Reach Battle Pass level 71 (Free)
UA/Relikt Cuirass	Vakara GesmbH	Armor reinforcement set made to the specific requirements of Spartan containment teams.	Epic	Purchase "Grenadier Pack" Bundle from the Shop for 1,000 cR

Shoulders

Shoulders
Shoulders	Manufacturer	Lore	Rarity	Unlock Requirements
UA/Aeson	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Epic	Purchase "Soldier Armor Set" Bundle from the Shop for 2,000 cR
UA/Agathius	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Epic	Left: Season 01: Heroes of Reach Battle Pass level 46 (Free) Right: Season 01: Heroes of Reach Battle Pass level 49 (Free)
UA/Alair	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Cobalt Medic" Bundle from the Shop for 700 cR
UA/Castus	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Scarlet Medic" Bundle from the Shop for 500 cR
UA/Efrem	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Epic	Purchase "Anubis Armor Set" Bundle from the Shop for 2,000 cR (or 1,200 cR during a sale)
UA/Faunus	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Bullet Time" Bundle from the Shop for 500 cR
UA/Gordius	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Stormfall Armor Set" Bundle from the Shop for 1,200 cR
UA/Hampus	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Intrusion Pack" Bundle from the Shop for 500 cR
UA/Tatius	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Left: Winter Contingency Event Pass level 3 Right: Winter Contingency Event Pass level 4
UA/Theocles	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Sleepwalker Suite" Bundle from the Shop for 500 cR
UA/Velius	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Purchase "Greenhorn Pack" Bundle from the Shop for 500 cR
UA/Viator	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Epic	Purchase "Zvezda Armor Set" Bundle from the Shop for 2,000 cR (or 1,500 cR during a sale)
UA/Vitus	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Common	Unlocked by default
UA/Vorenus	Chalybs Defense Solutions	Supplemental deltoid/shoulder armor.	Rare	Left: Season 02: Lone Wolves Battle Pass level 74 (Free) Right: Season 02: Lone Wolves Battle Pass level 75 (Free)

Wrist

Wrists
Wrist	Manufacturer	Lore	Rarity	Unlock Requirements
UA/Type II-A1 Buckler	Materials Group	Despite rumors to the contrary, this buckler does not have an energy shield generator.	Legendary	Season 01: Heroes of Reach Battle Pass level 100 (Free)

Knee pad

Knee Pads v • d • e
Knee Pads	Manufacturer	Lore	Rarity	Introduced In	Unlock Requirements
UA/Type MR	Materials Group	Supplemental leg armor.	Rare	Season 01: Heroes of Reach	Purchase the "Stormfall Armor Set" from the Shop for 1,400 cR
UA/Type RG	Materials Group	Supplemental leg armor.	Rare	Season 01: Heroes of Reach	Purchase the "Zvezda Armor Set" from the Shop for 1,000 cR
UA/Type SA	Materials Group	Supplemental leg armor.	Common	Season 01: Heroes of Reach	Unlocked by default
UA/Type SP	Materials Group	Supplemental leg armor.	Epic	Season 01: Heroes of Reach	Purchase the "Anubis Armor Set" from the Shop for 900 cR
UA/Type ST	Materials Group	Supplemental leg armor.	Rare	Season 01: Heroes of Reach	Purchase the "Shred or Die" bundle from the Shop for 300 cR
UA/Type AS	Materials Group	Supplemental leg armor.	Rare	Season 02: Lone Wolves	Purchase this item individually or as part of the "Celox Armor Set" for 800 cR or 1,500 cR respectively.
UA/Type BF	Materials Group	Supplemental leg armor.	Rare	Season 02: Lone Wolves	Season 02: Lone Wolves Battle Pass level 66 (Free)
UA/Type DP	Materials Group	Supplemental leg armor.	Rare	Season 02: Lone Wolves	Season 02: Lone Wolves Battle Pass level 4 (Free)
UA/Type DH	Materials Group	Supplemental leg armor.	Epic	Season 04: Infection	Purchase the "BRXX Lightfire" bundle from the Shop for 1,800 cR or 1,400 cR on a sale
UA/Type MX	Emerson Tactical Systems	Supplemental leg armor.	Legendary	Season 04: Infection	Purchase either: "Courier" for 1,800 cR "Hazmat Haven" for 3,400 cR
UA/Type SI	Materials Group	Supplemental leg armor.	Legendary	Season 04: Infection	Season 04: Infection Battle Pass level 12 (Free)
Tactical Knee Warmers	343 Industries	Peppermint-coated supplemental leg armor.	Epic	Winter Contingency III	Winter Contingency III Operation Pass level 14
Champion's Kneepad	Banished	It has some flair.	Legendary	Banished Honor	Banished Honor Operation Pass level 5
Kneecapper	Banished	Improvised cutting instrument.	Legendary	Banished Honor	Purchase the "Paths to Dominance" superbundle from the Shop for 3,200 cR.
Renegade Kneeguard	Banished	Supplemental armor plating.	Legendary	Banished Honor	Purchase the "Renegade" bundle from the Shop for 2,000 cR.
Tormentor's Kneepads	Banished	Even warmasters bend the knee to Atriox.	Epic	Banished Honor	Purchase the "Paths to Dominance" superbundle from the Shop for 3,200 cR.
Emissary Kneeguard	Banished	Supplemental armor plating.	Epic	Champions	Champions Operation Pass level 5
Sovereign Guard	New Tyne Armory	Incorporates micro-gravity shock dampeners which made kneeling more comfortable.	Legendary	Champions	Purchase the "HaloWC 2024 Championship Bundle" from the Shop for 2,200 cR.
Bone Bracers	Watershed Division	Protect your knee bones, thigh bones, and leg bones.	Legendary	Haloween	Purchase this item individually or as part of the "Stellar Eclipse" bundle for 300 cR or 2,200 cR respectively.
Monster Guards	343 Industries	Even monsters kneel before their creator.	Epic	Haloween	Haloween Operation Pass level 5
Helioskrill Poleyn	UNSC	The body and blade must stay in motion.	Epic	Great Journey	Purchase either: "Arbitration" for 1,800 cR "Delta Forged" for 3,900 cR
Thremaleon Poleyn	UNSC	A good hunter augments their luck with carefully placed armor.	Legendary	Great Journey	Great Journey Operation Pass level 05
UA/Type MI	Materials Group	Materials Group refit of a common UNSC armored kneepad.	Legendary	Great Journey	Purchase the "Wartime Requisition" bundle from the Shop for 2,000 cR

Mark V[B] armor core

Helmet Attachments

Helmet Attachments
Helmet Attachment	Manufacturer	Lore	Compatible Helmets	Rarity	Unlock Requirements
UA/Type B1	Materials Group	Enhanced helmet armor.	Air Assault Commando Mark V [B]	Rare	Season 01: Heroes of Reach Battle Pass level 2 (Premium)
UA/Type C1	TBD	Enhanced helmet armor.	Mark V [B] CQC CQB EVA Air Assault ODST	Rare	Winter Update Battle Pass level 25 (Free)
UA/Type E3	Materials Group	Enhanced helmet armor.	Grenadier Mark VI Scout	Rare	Season 01: Heroes of Reach Battle Pass level 78 (Premium)
UA/Type O5	TBD	Enhanced helmet armor.	Mark V [B]	Rare	TBD

Chest

Chests
Chest	Manufacturer	Lore	Rarity	Unlock Requirements
UA/D0-01-CCR Breaching Kit	Beweglichkeitsrüstungsysteme	An armored yoke and carrier for additional shotgun shells.	Epic	Season 01: Heroes of Reach Battle Pass level 3 (Premium)
UA/D0-06-FGM Tactical Kit	Beweglichkeitsrüstungsysteme	A multi-threat up-armor module kit compatible with most MJOLNIR models and variants.	Rare	Season 01: Heroes of Reach Battle Pass level 24
UA/ODST	Cascade Stronghold Technologies	Even MJOLNIR armor can do with a bit of reinforcement from time-to-time.	Rare	Season 01: Heroes of Reach Battle Pass level 67 (Premium)
UA/SIMA	Materials Group	The Shield Improvement Module - Alpha was an upgrade that never quite reached successful deployment, but the armored housings quickly found a new use with the Spartan-IIIs.	Rare	Winter Update Battle Pass level 24 (Free)
UA/TAAP	SinoViet Heavy Machinery	This yoke provides an extra layer of collar protection constructed from warship-grade Titanium-A.	Rare	Winter Update Battle Pass level 3 (Free)
UA/TSA Prototype	Chalybs Defense Soutions	Testbed thermal-superconducting plate meant to provide additional protection against plasma-based weaponry.	Rare	Purchase "HAZOP Armor Set" Bundle from the Shop for 2,000 cR
UA/VAUNTLOCK	Materials Group	An addition to an armored yoke, this ensemble includes an early-model VAUNTLOCK power pack, which can temporarily power Mjolnir shields if the suit's fusion power plant fails.	Legendary	Season 01: Heroes of Reach Battle Pass level 73 (Premium)

Wrist

Wrists
Wrist	Manufacturer	Lore	Rarity	Unlock Requirements
UA/P1DA Bracer	Beweglichkeitsrüstungsysteme	Supplemental wrist armor.	Rare	Season 01: Heroes of Reach Battle Pass level 4 (Premium)

Knee pad

Knee Pads v • d • e
Knee Pads	Manufacturer	Lore	Rarity	Introduced In	Unlock Requirements
UA/Type FJ	Cascade Stronghold Technologies	Lightweight, shock-absorbing knee armor.	Epic	Season 01: Heroes of Reach	Season 01: Heroes of Reach Battle Pass level 52 (Premium)
UA/Type HAZ	Materials Group	Materials Group designed and manufactured a range of supplemental leg armor kits to meet the needs of Spartan field operatives.	Rare	Season 01: Heroes of Reach	Purchase the "HAZOP Armor Set" from the Shop for 1,400 cR
UA/Type GND	Materials Group	MJOLNIR [G] up-armored prototypes incorporated a layer of shock-dissipating fractal cubes, which became standard in later designs.	Epic	Season 01: Heroes of Reach	Season 01: Heroes of Reach Battle Pass level 72 (Premium)
UA/Type KT	Materials Group	Hazardous environments almost always require extra precautions.	Common	Season 01: Heroes of Reach	Unlocked by default
UA/Type CQB	Beweglichkeitsrüstungsysteme	Supplemental leg armor.	Rare	Winter Update	Noble Intention Event Pass level 3
UA/Type GR	Materials Group	Supplemental leg armor optimized for balance.	Rare	Winter Update	Winter Update Battle Pass level 13 (Free)
UA/Type JFO	Beweglichkeitsrüstungsysteme	All-environment supplemental leg armor.	Rare	Winter Update	Joint Fire Event Pass level 3 Purchase from The Exchange for 1,500
Defiled Cap	The Flood	Deconstructing one part of the body to reinforce another.	Legendary	Season 05: Reckoning	Season 05: Reckoning Battle Pass level 41 (Premium)
Defiled Drive	The Flood	What you can't see is even more horrific.	Legendary	Season 05: Reckoning	Purchase either: "Contaminator" for 2,000 cR "The Flood" for 2,800 cR
UA/Type KLT	Beweglichrüstungsysteme	Supplemental leg armor.	Epic	Season 05: Reckoning	Season 05: Reckoning Battle Pass level 12 (Premium)
UA/Type RWR	Materials Group	Supplemental armor protection.	Epic	Season 05: Reckoning	Season 05: Reckoning Battle Pass level 7 (Premium)
UA/Type OST	Chalybs Defense Solutions	Supplemental armor embedded with additional seismic sensors.	Epic	Fleetcom	Fleetcom Operation Pass level 05

Trivia

• The UA/Multi-Threat appeared in the Halo: Reach multiplayer beta as the ASSAULT/SCOUT, this version did not include a belt. Likewise the UA/Base Security [W] appeared as the MP/BASE SECURITY which also did not include a belt. The belt-less versions remained in the files of Halo: Reach, but went unused.
  • It was not until the release of Season 1: Noble in Halo: The Master Chief Collection that the belt-less versions returned.
• The UA/BUCKLER is named after a small hand-held shield from the middle ages of the same name.
• The UA/CHOBHAM is named after the composite tank armor of the same name.
• The Relikt Cuirass and Malachit Plate seem to be named after the 3rd generation Relikt and 4th generation Malachit explosive reactive armors used on modern Russian armored vehicles.

Gallery

Concept art

• 

  Concept art of the UA/Type II-A1 Buckler wrist attachment (left) for Halo Infinite.

Halo 3

• 

  UA attachment on the ODST armor/HVY helmet in the Halo: The Master Chief Collection version of Halo 3.

Halo: Reach Multiplayer Beta and Halo: Reach

• 

  The MP/BASE SECURITY chest from the Halo: Reach Beta.

• 

  The ASSAULT/SCOUT chest from the beta.

• 

  A Mark V[B]-clad Spartan employing the UA/Base Security and UA/Base Security [W] shoulders and chest.

• 

  A Mark V[B]-clad Spartan employing the UA/Multi Threat and UA/Multi Threat [W] shoulders and chest.

• 

  A Marine wearing UA/Base Security shoulder pauldron in Halo Reach.

Halo 5: Guardians

• 

  UA attachments on the Indomitable helmet and forearms in Halo 5: Guardians.

Halo Infinite

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  A Spartan wearing UA/Agathius shoulders in Halo Infinite.

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  Close up of the UA/Type SA

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  A Spartan wearing the UA/Viator shoulder pad on their right arm.

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  Close up of UA/Agathius.

List of appearances

• Halo 3 (Halo: The Master Chief Collection-only)
• Remember Reach
  • Deliver Hope (First appearance)
• Halo Reach
• Halo 2: Anniversary
• Halo 5: Guardians
• Halo Infinite
• Halo: Flashpoint