- "Lock-on launcher. Primarily anti-air with an optical smart lock, but can be dumb fired."
- — Create-a-Class description
The Spartan SA3 can be found and used in certain missions, primarily to disable and destroy enemy C12s
The Spartan SA3 is unlocked by default. It can lock on to scorestreaks, but can also be fired freely.
The Spartan sports an integrated optic known as the Optical Smart Lock, which highlights enemy scorestreaks in bright yellow and red when in the view of the scope. The sight also features its own unique light green Dot Field reticle.
It fires a rocket in a relatively straight path, and is extremely powerful that it could kill any player in a direct hit,regardless of his chosen Combat Rig.
The Spartan SA3 is unlocked at level 4 in Zombies mode. It is available from the Magic Wheel. Its abysmal ammunition count and reserves leads many players to switch out this weapon for one with substantially more ammunition, such as the Mauler. If a player wishes to use this weapon, it is advised they also buy Bombstoppers to prevent any splash damage from affecting them.
When Pack-a-Punched, it becomes the Iron Eagle, with plentifully more ammunition available at 5 rockets per "magazine" and 45 rockets in reserve. The Iron Eagle also reloads its entire "clip" in one rocket, negating a need for Quickies. The Iron Eagle loses its killing ability by scene 18, however begins to make crawlers past that scene consistently.
Spartan SA3 vs Iron Eagle vs Geiger's Spear