The OSTEO combat engineering suit, also known as the HAZMAT armor, is a human armor system employed by unaugmented personnel as well as Spartan Operations personnel for HAZMAT operations. The suit was created as part of Project: OSTEO.
M61 Series Body Armor, Halo Fanon
Rakshasa — WikiHalo
CQB - Armor - Halopedia, the Halo wiki
MARK V [B]: An Armour Core Deep Dive : r/HaloStory
Scout — WikiHalo
GUNGNIR - Armor - Halopedia, the Halo wiki
Copperhead - Armor - Halopedia, the Halo wiki
Lechuza - Armor - Halopedia, the Halo wiki
Recon — WikiHalo
Mjolnir Powered Assault Armor, Halo Alpha
Wilhelm — WikiHalo
Nehxa Zek Kyrose, Wiki
Who Would Win, Destiny Cabal or Warhammer 40k Orks? - Quora