| Forearms | |||||
|---|---|---|---|---|---|
| Forearms | Unlock (Halo 4) | Unlock (Halo: The Master Chief Collection) | Skins | Unlock (Halo 4) | Unlock (Halo: The Master Chief Collection) |
| Recruit | Unlocked by default | Unlocked by default | PRME | Buying Halo 4 Limited Edition | Unlocked by default on Season 4 update |
| Twin-plated | SR-9 | Unlocked by default on Season 4 update | AEON | Complete Close Quarters Commendation | Unlocked by default on Season 4 update |
| SWFT | N/A (Cut) | Unlocked by default on Season 4 update | |||
| GV-09 Locking | SR-22 | Unlocked by default on Season 4 update | FRST | Pre-order Halo 4 from GameStop | Unlocked by default on Season 4 update |
| Inner-plated | SR-30 | Unlocked by default on Season 4 update | WEB | Pre-order Halo 4 from Amazon.com | Unlocked by default on Season 4 update |
| TOXC | Buy the Spartan Scout figure from McFarlane Toys' Halo 4 Series 2 | Unlocked by default on Season 4 update | |||
| Outer-plated | SR-34 | Unlocked by default on Season 4 update | RPTR | Pre-order Halo 4 from Best Buy | Unlocked by default on Season 4 update |
| BYNT | Buying the Champions Bundle | Unlocked by default on Season 4 update | |||
| RFCT | Buying the Didact figure from McFarlane Toys' Halo 4 Series 2 | Unlocked by default on Season 4 update | |||
| Contoured | SR-39 | Unlocked by default on Season 4 update | SHRD | Complete Perfection Commendation | Unlocked by default on Season 4 update |
| XV-27 Shifting | SR-48 | Unlocked by default on Season 4 update | PULS | Pre-order Halo 4 from Microsoft | Unlocked by default on Season 4 update |
| CRCT | Pre-order Halo 4 from Walmart | Unlocked by default on Season 4 update | |||
| SLID | Buying the Champions Bundle | Unlocked by default on Season 4 update | |||
| Mark VI | Complete Legend Commendation | Unlocked by default | N/A | ||
| FOTUS | Buying Halo 4 Limited Edition Console | Unlocked by default | N/A | ||
| Mark V | Buying the Infinity Armor Pack or the Champions Bundle | Series 7, Tier 33 | N/A | ||
| ODST | Buying the Infinity Armor Pack or the Champions Bundle | Series 7, Tier 88 | N/A | ||
| Prefect | Buying the Infinity Armor Pack or the Champions Bundle | Series 7, Tier 56 | N/A | ||
| Ricochet | Buying the Bullseye Pack or the Champions Bundle | Series 7, Tier 50 | N/A | ||
