Forerunner socket system

During the development of Halo 5: Guardians, a system was concepted and drawn up by 343 industries for inclusion in the game, though was ultimately cut while being conceptualised for unknown reasons.

History
The Forerunner Socket System was a weapons system cut from Halo 5: Guardians. It was a system to be used by mainly the Forerunner faction for their weapons and vehicles. The cores would have been able to be swapped out of the vehicles and weapons, but would not be able to be swapped between the vehicles or weapons.

Weapon Core: Beam
The beam core which was apart of the mega cores designed for the Forerunner vehicles also cut from Halo: 5 the cut core was to fire a continuous beam of Hard light.

Ability Core: Shield Array
The shield array mega core was designed for the Forerunner vehicles also cut from Halo: 5 the cut core was to produce a blue hard light shield in front of a small area on the vehicle.

Deployer Core: Enemy Spawn
The enemy spawn mega core was designed for the Forerunner vehicles also cut from Halo: 5 the cut core was to produce Sentinel like pods that would hunt down and attack enemies.