The M13B is an assault rifle and was released with the Season 1 Reloaded update of MW2 on December 14, 2022. It may be used in Warzone 2 and weapon progress carries over into MW3.
M13B: Key Takeaways
- The M13B is currently an A-Tier option in the MW3 meta and an A-Tier option in the Warzone 2 meta
- The current best loadout attachments for the M13B in MW3 are: Echoless-80, VLK LZR 7mW, Slimline Pro, D37 Grip, and 45 Round Mag
- The current best loadout attachments for the M13B in Warzone 2 are: Harbinger D20, 14′ Bruen Echelon, AIM OP-V4, FTAC Ripper 56, and 60 Round Mag
For a meta AR loadout check out the Kastov 762.
Table of Contents
Best M13B Loadout Warzone
- Muzzle: Harbinger D20
- Barrel: 14″ Bruen Echelon
- Optic: Aim OP-V4
- Underbarrel: FTAC Ripper 56
- Magazine: 60 Round Mag
Best M13B Loadout MW3
- Muzzle: Echoless-80
- Laser: VLK LZR 7mW
- Optic: Slimline Pro
- Rear Grip: D37 Grip
- Magazine: 45 Round Mag
Best M13B Loadout MW2
- Muzzle: Echoless-80
- Laser: VLK LZR 7mW
- Optic: Slimline Pro
- Rear Grip: D37 Grip
- Magazine: 45 Round Mag
Unlocking the M13B
To unlock the M13B a player must first defeat “The Chemist” in the radiation zone in DMZ. Then extract with his dropped M13B blueprint.
M13B Camo Challenges
Players must reach the required weapon level before challenge progress can be made towards unlocking the camo.
M13B Multiplayer Camo Challenges
Camo | Challenge | Unlock Level |
Tarnished | Get 50 kills with the M13B | 2 |
Field Ops | Get 10 double kills with the M13B | 9 |
Projectile | Get 15 point blank kills with the M13B | 15 |
Ice Cave | Get 15 kills from behind with the M13B | 19 |
Gold | Get 3 kills without dying 10 times with the M13B | Complete all base camo challenges |
Platinum | Get 25 longshot kills with the M13B | Complete 8 Gold challenges with ARs |
Polyatomic | Get 25 headshot kills with the M13B | Complete 51 Platinum camo challenges |
Orion | N/A | Complete 51 Polyatomic camo challenges |
M13B Zombie Camo Challenges
Camo | Challenge | Unlock Level |
Moldy Membrane | In Zombies, Get 250 kills with the M13B | 2 |
Looming Shadow | In Zombies, Get 10 kills in 5 seconds 10 times with the M13B | 9 |
Tormentor | In Zombies, Get 250 hipfire kills with the M13B | 15 |
Final Visage | In Zombies, Get 50 Mercenary kills with the M13B | 19 |
Golden Ivory | In Zombies, Get 100 kills and successfully extract with the M13B in a single deployment | Complete all zombie base camo challenges |
Spinal Husk | In Zombies, Get 300 kills with the M13B 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 M13B | Complete 51 Spinal Husk camo challenges |
Bioluminescent | N/A | Complete 51 Arachnida camo challenges |
Looking to test or share your M13B loadouts?
Zleague.gg has one of the largest communities of Warzone players on our mobile app. Download the app today and try the LFG feature to form new squads.
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.