This STB 556 loadout in MW2 is ideal for changing the recoil-heavy AR into an accurate and versatile beast perfect for all types of combat.

If you’re trying out the STB 556 for the first time or grinding it to unlock new attachments, this loadout will help you rack up eliminations in no time.

Best STB 556 Loadout Build in MW2

The five best attachments for the STB 556 build in MW2 are:

  • Laser: ACCU-SHOT 5MW Laser – Unlocked at Lockwood Mk2 Level 11
  • Barrel: 508MM Rear Guard – Unlocked at STB 556 Level 11
  • Muzzle: FTAC Castle Comp – Unlocked at 556 Icarus Level 10
  • Comb: FTAC C11 RISER – Unlocked at MX9 Level 5
  • Optic: Cronen Mini Pro – Unlocked at Expedite 12 Level 7

If you want to get your hands on all of these attachments, then you’ll need to grind multiple guns. Fortunately, it is easy to level up your weapons quickly in MW2.

the STB 556 loadout showcased in MW2

The ACCU-SHOT 5MW laser will improve your overall ADS (aim down sight) speed and aiming stability. This will help compensate for the reduction in ADS speed from other attachments.

With the 508MM Rear Guard barrel, you’ll notice an improvement in damage range and bullet velocity. This will make your STB 556 far more effective at longer ranges while keeping it powerful up close.

The FTAC Castle Comp muzzle is effective at bringing down your recoil both horizontally and vertically. This will prevent your STB 556 from drifting upwards whenever you shoot continuously.

Additionally, the FTAC C11 RISER comb will improve your ADS and sprint-to-fire speed, allowing you to snap from sprinting to aiming with lightning-fast precision.

Finally, the Cronen Mini Pro is a fantastic optic that most players should use if they don’t want a more zoomed-in scope.

Alternative Attachments for the STB 556

If you don’t fancy grinding a bunch of guns to unlock attachments for the STB 556, then fear not. We’ve compiled a loadout using just attachments unlocked through leveling up the STB 556.

All of these attachments can be unlocked by just progressing the STB 556.

  • Laser: VLK LZR 7MW – Unlocked at STB 556 Level 5
  • Barrel: 508MM Rear Guard – Unlocked at STB 556 Level 11
  • Muzzle: Sakin Tread-40 – Unlocked at STB 556 Level 3
  • Rear Grip: STIP-40 Grip – Unlocked at STB 556 Level 10
  • Underbarrel: XTEN Drop Grip – Unlocked at STB 556 Level 8

How to Unlock the STB 556 in MW2

Players will unlock the STB 556 when they reach Rank 41 in MW2. You can reach this rank by playing any online multiplayer match regardless of the mode.

While Rank 41 may seem like a challenging target to reach, there are plenty of ways to rank up fast in MW2, which will help you get there in no time.

the progression tree showing the STB 556

Best Secondary to Use With the STB 556 in MW2

The best secondary to use with the STB 556 is the Bryson 800 shotgun. It will give you a huge leg up in bridging the gap between mid and close-range combat.

Having the Bryson 800 by your side will allow you to take out any enemies that manage to sneak up on you or avoid your fire.

However, to equip it, you will need to use the Overkill perk. If you don’t want to use that perk, then the Basilisk revolver is a good choice, as it’s powerful at close and mid-range and kills enemies in two hits.

Best Perks to Use With STB 556

The best perks to use with the STB 556 in MW2 are:

  • Double Time
  • Overkill
  • Fast Hands
  • Ghost

This custom perk package is going to let you maneuver around each map with ease while remaining hidden from enemies.

It encourages fast TTK by improving weapon swap speed and reload speed while ensuring that stealthier plays are also supported.

Of course, you’re not beholden to these perks. If you want to use any others, then you should check out every perk and perk package in MW2 first to see what works for you.

Best STB 556 Base Perks

  • Double Time
  • Overkill

If you opt to use the Overkill perk, you’ll be able to bring a shotgun or any other primary weapon into the fray with you. This will allow for a greater sense of versatility when it comes to covering all ranges.

However, if you’re content using a pistol like the Basilisk, then why not try out the Bomb Squad or Scavenger perks?

Bomb Squad will keep you safe from deadly explosives, while the Scavenger perk will allow you to replenish your ammo from dead enemies.

Either way, having the Double Time perk equipped will double the duration of your Tactical Sprint, allowing you to hastily get away if necessary.

Best STB 566 Bonus Perk

  • Fast Hands

The Fast Hands perk will allow you to reload and swap weapons quickly. This pairs nicely with the Overkill perk, as it allows you to switch out to a shotgun instantly if you spot an enemy rushing toward you.

However, the ability to reload quickly is why this perk is so crucial. Reducing the time between firing is often the difference between life and death in MW2.

Best STB 566 Ultimate Perk

  • Ghost

There are plenty of perks that would work well with the STB 566, including Quick Fix and High Alert. However, the Ghost perk will afford you a far greater amount of strategies.

It makes you undetectable from UAVs, Portable Radars, and Heartbeat Sensors, essentially making you the ultimate assassin.

Best Equipment to Use With STB 556

The best equipment to use with this STB 556 loadout is:

  • Flash Grenade
  • Semtex

The Flash Grenade is perfect for modes like Hardpoint, where you either want to flush out a room of enemies or temporarily incapacitate them before wiping them all out.

Semtex, on the other hand, is perfect for getaways or for taking out someone camping out in a difficult-to-reach spot above you.

They also offer a little more accuracy than a regular Frag Grenade as they stick to the target you aim at. Try and hit your opponent with a Semtex as they run by for a truly explosive result.

Best Field Upgrade to Use With the STB 556

The best Field Upgrade in MW2 to use with this STB 556 loadout is the Deployable Cover.

As you’ll typically be using the STB 556 from mid-to-long range, you’ll want the Deployable Cover to offer yourself a little protection.

However, if you’re looking for something a bit more aggressive, then why not use the Battle Rage Field Upgrade? This will improve your health regeneration and replenishes your Tactical Sprint constantly.

Of course, if you aren’t interested in either of these, then there are a plethora of alternative Field Upgrades available. Have a look at all of the Field Upgrades in MW2 and choose the one for you.

the STB 556 being shown off in MW2

Best Alternatives to STB 556

While this loadout should see your STB 556 transform into a powerhouse, if you’re considering alternative assault rifles, then you cannot go wrong with this M4 loadout.

Of course, if you’re looking for something a little more accurate, then why not give this Lachmann-556 loadout a go?

Former Staff Writer
Whether it's an indie platformer or a 100-hour JRPG, Tom loves talking about games. So much so, he made it his career. Since starting in 2020, he's covered a wide range of topics at sites including TheGamer and The Game Crater.