The STB 556 is an assault rifle and was released with the launch of MW2 on October 28th, 2022. It may be used in Warzone 2 and weapon progress carries over into MW3.
STB 556: Key Takeaways
- The STB 556 is currently an A-Tier option in the MW2 and an A-Tier in the Warzone 2 meta.
- The current best loadout attachments for the STB 556 in MW2 are: VLK LZR 7mW, Cronen Mini Pro, Edge-47 Grip, 5.56 Armor Piercing, and 42 Round Mag
- The current best loadout attachments for the STB 556 in Warzone 2 are: Harbinger D20, 508mm Rear Guard, Aim OP-V4, 5.56 High Velocity, and 42 Round Mag
For a meta AR loadout check out the Kastov 762.
Table of Contents
Best STB 556 Loadout Warzone
- Muzzle: Harbinger D20
- Barrel: 508mm Rear Guard
- Optic: Aim OP-V4
- Ammunition:5.56 High Velocity
- Magazine: 42 Round Mag
Best STB 556 Loadout MW3
- Laser: VLK LZR 7mW
- Optic: Cronen Mini Pro
- Underbarrel: Edge-47 Grip
- Ammunition: 5.56 High Velocity
- Magazine: 42 Round Mag
Best STB 556 Loadout MW2
- Laser: VLK LZR 7mW
- Optic: Cronen Mini Pro
- Underbarrel: Edge-47 Grip
- Ammunition: 5.56 High Velocity
- Magazine: 42 Round Mag
Unlocking the STB 556
Players can unlock the STB 556 at level 41. Additionally, leveling the STB 556 to level 13 will unlock the MX9 and leveling the STB 556 to level 20 will unlock the HCR 56.
STB 556 Camo Challenges
Players must reach the required weapon level before challenge progress can be made towards unlocking the camo.
STB 556 Multiplayer Camo Challenges
| Camo | Challenge | Unlock Level |
| Sponge Tac | Get 50 kills with the STB 556 | 2 |
| Black Top | Get 20 kills while mounted with the STB 556 | 8 |
| Slate | Get 10 double kills with the STB 556 | 14 |
| Neon Pink | Get 30 kills while crouched with the STB 556 | 20 |
| Gold | Get 3 kills without dying 10 times with the STB 556 | Complete all base camo challenges |
| Platinum | Get 25 longshot kills with the STB 556 | Complete 8 Gold challenges with ARs |
| Polyatomic | Get 25 headshot kills with the STB 556 | Complete 51 Platinum camo challenges |
| Orion | N/A | Complete 51 Polyatomic camo challenges |
STB 556 Zombie Camo Challenges
| Camo | Challenge | Unlock Level |
| Dried Blood | In Zombies, Get 250 kills with the STB 556 | 2 |
| Shaman | In Zombies, Get 10 kills without reloading 10 times with the STB 556 | 8 |
| Arterial | In Zombies, Get 250 Kills with Electric Damage with the STB 556 | 14 |
| Frostbite | In Zombies, Get 250 kills in the Medium or High Threat Zone with the STB 556 | 20 |
| Golden Ivory | In Zombies, Get 100 kills and successfully extract with the STB 556 in a single deployment | Complete all zombie base camo challenges |
| Spinal Husk | In Zombies, Get 300 kills with the STB 556 while it’s Pack-A-Punched | Complete 8 Golden Ivory challenges with ARs |
| Arachnida | In Zombies, Get 10 Special or Elite Zombie kills with the STB 556 | Complete 51 Spinal Husk camo challenges |
| Bioluminescent | N/A | Complete 51 Arachnida camo challenges |
Looking to test your STB 556 loadouts?
Zleague.gg has one of the largest communities of Warzone players on our mobile app. Download the app today and try LFG to form new squads and check out each member’s performance stats.
You can also test out your loadouts in competitive play with Z League’s Warzone tournaments. All of Z League’s tournaments leverage proprietary skill-based matchmaking (SBMM) algorithms to ensure that you’re always placed in a division with similarly skilled players.
