Before any of the MWIII guns were ported to Warzone Mobile during its Limited Release run, the M13B was the king of the AR jungle. Fast rate of fire coupled with good old aiming made it dominant in pubs or private lobbies.

While the M13B has fallen out of favor against newer additions like the RAM-7 and the SVA 545, this fast-firing weapon is still deadly especially in close-range encounters.

The M13B is among the weapons we made a build of and found how this gun can still become a viable comfort pick for those playing it in the Global Release in Warzone Mobile! 

NOTE: MWII guns have yet to receive compatibility with MWIII attachments in Warzone Mobile. We will update this page accordingly once MWIII attachments are available.

STOCK: Bruen R90 Factory 

This recoil control-focused stock allows for better handling and management of the fast-firing weapon’s recoil.

MAGAZINE: 60 Round Mag (unlocked at Level 18)

Just like its counterparts in Call of Duty: Modern Warfare and Call of Duty: Mobile, the M13B is a gas-guzzler for ammunition. The fast fire rate will drain 30-rounders and 45-rounders quickly, which is why the 60-round mag is the best choice, especially for close-combat encounters.

 

MUZZLE: Harbinger D20 (unlocked by leveling the STB 556 to Level 18)

The best muzzle attachment for ARs in the MWII era, the Harbinger D20 helps in increasing bullet velocity as well as firing aim stability, with an added benefit of being undetectable by radar as the attachment is a silencer.

 

OPTIC: AIM-OP V4 (unlocked by leveling the BAS-P to Level 5)

The most effective optic for the MWII era attachments, the AIM-OP V4 allows for precise target acquisition with minimal to controllable visual recoil, allowing you to make the most out of the M13’s fast firing rate.

 

UNDERBARREL: FTAC Ripper 56 (unlocked by leveling up the Lachmann 762 to Level 6)

Undoubtedly the best mix of aiming stability and handling in a grip for MWII attachments, the FTAC Ripper 56 will ensure you stay on target while also controlling the effective recoil pattern of the weapon.

 

OPTIONAL REPLACEMENTS:

BARREL: 14” Bruen Echelon [to replace Stock] (unlocked at level 17)

For those wanting a more full-size assault rifle build, the 14” Bruen Echelon barrel allows for longer-range engagements while providing a damage range and recoil control buff.

MUZZLE: XTEN Ported 290 [to replace Muzzle] (unlocked by leveling the HCR 56 to Level 16)

This ported compensator is the best non-silencer recoil control attachment for rapid-fire weapons, allowing you better recoil control and more controlled bursts.

 

These attachments will help make sure the M13B is a viable choice for those who wish to stick with their classic loadouts!