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Battle Rifles are a peculiar class of rifles inModern Warfare 3andWarzonethat seem to sit somewhere in between Light Machine Guns and Assault Rifles. This weapon platform tends to sport higher damage than its AR counterparts but has significantly less recoil control. Those of you diving into this weapon category may have come across theBAS-B, an all-around great gun for almost any situation.
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The BAS-B is a Battle Rifle you willunlock upon reaching Level 17in Modern Warfare 3. It is a great rifle, sporting thehighest fire rateand thebest level of handling, range, and mobilityin its weapon category. Though many Assault Rifles are by far the more popular choice, the BAS-B can be devastatingly good with the best attachments.

Updated by Nathan Round on 19th December 2023:We have updated this guide with an additional BAS-B build for Warzone, along with additional Perk and Secondary Recommendations.
Best BAS-B Modern Warfare 3 Build
The below BAS-B build is designed solely for Core Multiplayer. The attachments below will boost accuracy considerably, along with improving range and recoil control.
Attachments
MONOLITHIC SUPPRESSOR L (Muzzle)
CHEWK ANGLED GRIP (Underbarrel)
FSS OLE-V LASER (Laser)
MK. 3 REFLECTOR (Optic)
45 ROUND DRUM (Magazine)

Best BAS-B Warzone Build
Our next BAS-B build is more tailored for Warzone. The attachments below will boost damage, range, accuracy, and recoil control - at the cost of mobility and handling.
LOCKSHOT KT85 (Muzzle)
BRUEN VENOM LONG BARREL (Barrel)
BRUEN HEAVY SUPPORT GRIP (Underbarrel)
CORIO EAGLESEYE 2.5X (Optic)
Modern Warfare 3 MTZ-762: Best Attachments & Best Loadout
The MTZ-762 is a strong Battle Rifle in Modern Warfare 3. Here are the best attachments and loadout for it!
Recommended Perks
Infantry Vest
Scavenger Gloves
Lightweight Boots
Mag Holster
The above Perk Package has a lot of resemblance to some of our Assault Rifle loadouts. For the most part, we aim to focus on boosting mobility, which is where theInfantry Vest and Lightweight Bootscome in.Scavenger Glovesare also a definite must for almost any loadout, especially if you find yourself running out of ammunition quickly. TheMag Holsteris crucial for the BAS-B, as its reload speed is painfully slow.
For Warzone, equip the following:Double Time, Sleight Of Hand, Tempered, and Birdseye.

Recommended Secondary
The BAS-B can hold its own quite well in Modern Warfare 3’s Multiplayer, making it the only go-to weapon for this loadout. With that being the case, you are free to run a launcher like thePILA, which should be used specifically for targeting enemy killstreaks.
For Warzone, however, it might be best to take a close-range support weapon. Weapons from both theHandgun and Submachine Guncategories are useful in this regard. Some of our top recommendations includetheWSP Stinger,theTYR,theStriker,theWSP Swarm, andtheRival-9.

Modern Warfare 3 & Warzone DG-58 LSW: Best Attachments & Best Loadout
The DG-58 LSW is a powerful LMG in Modern Warfare 3 and Warzone. Here are the best attachments and the best loadout for it!
