STB 556

All attachments available for STB 556

All the attachments that can be unlocked for the STB 556 in MW3 can be found below

• XTEN Drop Grip
• 5.56 High Velocity
• STIP-40 Grip
• 24.4" Bruen S-620
• 42 Round Mag
• TL40 Fire Drake
• 18" Bruen Guerilla
• 508mm Rear Guard
• Harbinger D20
• Bruen MX9 Stock
• Single Tap Mod
• Cronen SP-DR
• SAKIN Tread-40
• Bruen HCR 56 Stock
• Schlager Night View
• Schlager TTF3 Riser
• VLK LZR 7MW

Modern Warfare 3 STB 556 unlock level

The process of unlocking the STB 556 in Modern Warfare 3 is incredibly straightforward. Here's what you need to do:

• Reach level 55 and complete unlock challenge

Modern Warfare 3 STB 556 loadout & build

MW3 STB 556 Loadout Setup

• Primary - STB 556
• Secondary - X13 Auto
• Tactical - Flash Grenade
• Lethal - Semtex
• Field Equipment - Munitions Box
• Vest - Infantry Vest
• Gloves - Commando Gloves
• Boots - Climbing Boots
• Gear - Mission Control Comlink
• Conversion Kit - None

MW3 STB 556 Attachment Setup

• Comb - FTAC C11 Riser
• Rear Grip - Bruen Q900 Grip
• Laser - STOVL Tac Laser
• Barrel - Bruen Turaco 686mm
• Underbarrel - FSS Sharkfin 90

MW3 STB 556 Camos

MW3 STB 556 Camos is still under investigation but will be added soon!

MW2 STB 556 Carry Forward Camos

Cammo & Challenges

• Sponge Tac - Get 50 kills with the STB 556
• Black Top - Get 20 kills while mounted with the STB 556
• Slate - Get 10 double kills with the STB 556
• Neon Pink - Get 30 kills while crouched with the STB 556
• Gold STB 556 - Get 3 kills without dying 10 times with the STB 556
• Golden Ivory STB 556 - In Zombies, get 100 kills and successfully extract with the STB 556 in a single deployment
• Bioluminescent STB 556 - Complete 51 Arachnida Camo Challenges
• Spinel Husk STB 556 - In Zombies, get 300 kills with the STB 556 while it's Pack-A-Punched
• Arachnida STB 556 - In Zombies, get 10 special or elite zombie kills with the STB 556