From Halopedia, the Halo wiki
Buccaneer helmets use off-the-shelf components, but the casing is custom made. It is also compatible with military VISRs, employing ingenious hacks to bypass licensing locks.
Discovery and research
The suit was discovered heavily damaged, and with forensic analysis of the remains of codename BUCCANEER, indicate it is a functional, and crude, MJOLNIR variant.
Halo 5: Guardians
Available skins: TYR and Illyri
Halo 5: Guardians skins
Halo 5: Guardians REQ cards
List of appearances