And one of the most popular and powerful guns carried forward is the M13B Assault Rifle.

Why use the M13B in MW3?

With such a high fire rate, the time-to-kill is very low despite the low damage-per-shot.

The player in Modern Warfare 2 inspects their weapon, an M13B Assault Rifle.

Just like the Harbinger suppressor, you also get the benefit of even less recoil.

It’s these two attachments together that turn the M13B into an absolute laser in Modern Warfare 3.

This laser does an amazing job at speeding up the rifle’s ADS and Sprint-To-Fire speeds.

Cover image for YouTube video

Just be aware that the laser is visible to enemies while you’re aiming down sights.

Particularly in Modern Warfare 3, where enemies have 150 health instead of MW2’s 100.

The 45 Round Mag hits the sweet spot between magazine capacity and handling for us.

And that’s the whole point of this zero-recoil M13B loadout, after all.

Best M13B class setup: Secondary weapon

Lockwood 300, Renetti, WSP Stinger.

If you do want to do that, we’d recommend a powerful Shotgun like the Lockwood 300.

When it comes to perks for this M13B class, we like to keep things simple.

TheInfantry Vestis a great pick for the improvements to mobility and Tac Sprinting.

TheVestalso dovetails well with the effects ofCommando Gloves, allowing you to reload while sprinting.

As for yourTacticalandLethalthrowables, equip a simpleFrag GrenadeandBattle Ragecombo to remain alive and versatile throughout any match.

For more Modern Warfare tips and tricks, check out our guide to thebest perksin-game for optimal loadouts.

Best M13B alternatives in Modern Warfare 3

FR Avancer, MCW, M4.