As quoted from Mechwarrior 4: Mercenaries...

CLASS: Inner Sphere Light

ARMOR TYPE, TONNAGE: Ferro Fibrous,5.0

INTERNAL STRUCTURE: Endo Steel

MAX SPEED (KPH): 130

GROSS TONS: 30

WEAPONS:

    Med Laser (5)
    SRM 6,
    MG Array

COMPONENTS: None

JUMP JETS: Yes

FIELD NOTES: The Osiris was produced by Fredonian Industrial Technologies to fill the need in the Inner Sphere for a light ’Mech to serve as scout and to harass the enemy by hitting and escaping quickly. Since its debut in 3063, the Osiris has found its way to every corner of the Federated Commonwealth and the Lyran Alliance.