Modern Warfare 3 has hundreds of attachments (with many being virtual lookalikes that essentially do the same thing slightly differently), which makes building guns an incredibly confusing process! Looking up class setups online can be clouded by tons of clickbait and low-effort junk, so if you're looking for highly researched and performance-tested class setups from an actual Call of Duty expert, you are in the right place! In this guide, we'll take a look at the best loadout and attachments for the MTZ-556 on 6v6 maps.
Best MTZ-556 Build & Attachments
The signature AR/SMG hybrid, the MTZ requires extensive focus on reducing the horizontal recoil. The MTZ is also the first of many ARs with a "faux" damage profile, meaning that the 26.7-meter Effective Damage Range in the Advanced Stats isn't exactly genuine - the same time-to-kill (TTK) extends to 35 meters as long as you keep at least 3/5 shots above the waist.
Since we have some range to play with, the Echoline GS-X converts a small amount of range into Firing Aim Stability and works in tandem with the Bruen Heavy Support Underbarrel to strongly mitigate the horizontal recoil. To properly capitalize on the MTZ's SMG properties, the Strafe Speed is significantly enhanced by the Barrel, Stock, and Rear Grip, resulting in a massive 27% increase to Strafe Speed. 3.68 m/s is an insanely fast Strafe Speed for an AR, and you really should see just how fast you can move from side to side with it.
While the Stock's only penalty is -1 FAS, I specifically used the Echoline GS-X to counter this and allow the underbarrel to operate at full strength on the horizontal recoil. The range is also a tad bit short of our 35-meter optimal range, but the MTZ is simply not the right gun for that distance anyway. Think of the MTZ as an SMG with significantly enhanced range; don't try to do AR things with the MTZ because the base gun just isn't built for that.
- Muzzle: Echoline GS-X
- Barrel: MTZ Para Long Barrel
- Stock: MTZ Litestrike Telescopic
- Rear Grip: MTZ Aggressor Grip
- Underbarrel: Bruen Heavy Support Grip
![[6v6] [AR] 02 MTZ-556.png](https://static.fanbyte.com/uploads/2024/02/02%20MTZ-556.png)
| Base | New | Base | New | ||
|---|---|---|---|---|---|
| Range | 35.0 m | 30.8 m | Recoil | 68.41 | 66.26 |
| ADS | 220 ms | 245 ms | FAS / AIS** | 0 / 0 | +1 / +2 |
| S2F* | 189 ms | 189 ms | Movement | 4.90 m/s | 5.56 m/s |
| Strafe | 2.90 m/s | 3.68 m/s | Sprint | 5.80 m/s | 5.80 m/s |
*Sprint to Fire; **Firing Aim Stability & Aiming Idle Sway
Our Testing Process: What does "Mathematically Optimized" mean?
It means that I have personally conducted over 30 hours of dedicated testing across the entire MW2 & 3 attachment set, endlessly consulted high-quality external resources and databases, and tirelessly tested performance across separate attachment combinations to produce what I believe to be the optimal build of a weapon for a specific purpose. Weapons are carefully crafted considering every possible detail - attempting to deliver the mathematically best possible performance in every category - mobility, handling, recoil, range, and accuracy.
With my builds, I believe you should see creative, never-before-seen uses of attachments that create incredible weapons. Do keep in mind that these weapons will not do the work for you - while they have all been precision-crafted to reduce horizontal recoil as much as possible, some of them still have quite noticeable vertical recoil, and it is on you to manage that vertical recoil correctly. I sincerely hope you enjoy reading about this build and every other build I have to offer on Fanbyte!
DISCLAIMER: If you test these in the Firing Range, please note that the Firing Range is currently glitched and shows more visual recoil and different damage performance than actually experienced in-game; it is best that you test these in a custom match or online.
