This Thread will list the possible way that the loudout weapon options will work in Halo 4, as normal loadouts for MP and NOT customs, as well as grouping together the other weapons.
Primary Weapons for loadouts:
UNSC:
Assault Rifle
Battle Rifle
Designated Marksman Rifle
Covenant:
Storm Rifle
Covenant Carbine
<mark>Needle Rifle</mark> (much more confident with this now)
Promethean:
Light Rifle (late unlock i assume)
Secondary:
UNSC:
Magnum
Covenant:
Plasma Pistol
Promethean:
Unknown Promethean Pistol (again, late unlock)
Now i will group together the rest of the weapons
Close Quaters:
Shotgun
Energy Sword
Scattershot
<mark>Gravity Hammer</mark>
Long Range:
Sniper rifle
Beam Rifle
Unkown Promethean Sniper
Explosives:
Sticky Detonator
Rail Gun
Spartan Laser
Fuel Rod Gun
Unknown Promethean “Rocket” launcher
<mark>Brute Shot</mark>
<mark>Concussion Rifle</mark>
<mark>Plasma Launcher</mark>
Support:
Needler
Unknown Promethean Repeater
SAW
Human Turret
Covenant Turret
<mark>Promethean Turret</mark>
<mark>Spiker</mark>
<mark>Brute Plasma Rifle/Brute Storm Rifle</mark>
Grenades:
Frag Grenade
Plasma Grenade
Promethean “EMP” Grenade
<mark>Brute Incendiary Grenade</mark>
Will update as more weapons are confirmed, i have the needle rifle there as i feel it will return unexpectedly just like the SAW being confirmed. I Will mark possible weapons that may return, but not confirmed with <mark>a highlight</mark>