UA attachments

MJOLNIR/UA, short for up-armor, refers a variety of supplemental armor attachments and accessories compatible with the MJOLNIR Powered Assault Armor. Like some other MJOLNIR variants, 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. Many UA attachments are available as Armor Permutations in Halo: Reach.

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.

Multi-Threat
Price: 2,000 cR

Base Security
Price: 1,200 cR

UA/Counterassault


''Supplemental Armor, Torso, MJOLNIR Mk. V; with increased storage capacity.''

Price: 600 cR

UA/ODST


Many technologies initially developed for MJOLNIR have seen widespread adoption.

Price: 750 cR, Warrant Officer

UA/Base Security [W]


Bringing grenades to a gunfight.

Price: Career Level 30. Earn the "Yes, Sensei" achievement in Halo: Reach.

UA/Multi-Threat


Supplemental armor for the default Mark V chest combined with a grenade belt around the waist, designed to provide Spartans with the most impact across a variety of scenarios. The chest plate is made up of an additional armor plate and a grenade belt.

Price: N/A [GameStop Pre-Order Bonus]

UA/Buckler


Supplementary wrist protection.

Price: 5,000 cR

UA/Bracer


Supplementary forearm protection.

Price: 10,000 cR

UA/NxRA


Supplemental armor, reactive, non-explosive.

Price: 40,000 cR

UA/Chobham


Supplemental armor, composite.

Price: 30,000 cR

Trivia

 * The UA/Multi-Threat appeared in the 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 UA/BUCKLER is named after a small French shield from the middle ages of the same name.
 * The UA/Chobham is named after the composite tank armor of the same name.