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Modern Warfare 2sees the return of weapons like the MP5 (Lachmann Sub), the M16, the RPK, and even the Scar-H, which is now called TAQ-56. The M4 also makes its return to Modern Warfare 2, and much like the M4A1 inModern Warfare, it performs as the jack-of-all-trades weapon in the multiplayer mode. The M4 is a gun that many will recognize, and byprogressing through its weapon tree, you canunlock the 556 Icarus, the M16, the FTAC Recon, and the FSS Hurricane. But exactly how good is the M4 in Modern Warfare 2?
Related:Modern Warfare 2 & Warzone 2 556 Icarus: How To Unlock & Best Attachments

The M4 is anAssault Riflethat proves to be a versatile weapon,performing exceptionally wellin most gameplay scenarios. The gun shines when used inmid-to-long-range engagementsbut still holds up remarkably well when used inclose-range gunfights. The M4 has anaverage aim-down sight speed, a fairlyhigh and consistent damage output, and aquick reloadfor the base build. New players do not need to grind the game all too much to unlock this gun, as the M4 is already available for all players once they gain access to Custom Loadouts upon reachingLevel 4.
Updated by Nathan Round on 20th December 2022:We have updated our Modern Warfare 2 M4 build to better fit the larger map of Warzone 2. We have also offered additional attachment recommendations, Perk Package options, and Secondary options specifically for Battle Royale.

Best M4 Warzone 2 Build
Our below M4 build aims to drastically improve accuracy and range at the cost of mobility and handling. The below build will also handle the bouncy recoil experience from a distance, perfect for Warzone 2.
Attachments
HARBINGER D20 (Muzzle)
FTAC RIPPER 56 (Underbarrel)
HIGHTOWER 20'' BARREL (Barrel)

AIM OP-V4 (Optic)
60 ROUND MAG (Magazine)
Best M4 Modern Warfare 2 Build
Our second build still provides a slight increase in range, but the loss of mobility and handling is not as significant as the previous one. This makes the M4 more tailored for running and gunning, perfect for regular Multiplayer.
ECHOLESS-80 (Muzzle)

FSS OLE-V LASER (Laser)
SLIMLINE PRO (Optic)
45 ROUND MAG (Magazine)
Related:Modern Warfare 2 & Warzone 2 FTAC Recon: How To Unlock & Best Attachments
Best Perk Package
Base Perks
Bonus Perk (Earned in Match)
Ultimate Perk (Earned in Match)
Double Time & Scavenger
Fast Hands
The following perks are great for players who like to befast and aggressive. For your first Base Perk slot, we recommend choosingDouble Time. Doing so willdouble the duration of your Tactical Sprint, thus making up for the mobility reduction of our chosen M4 build. Next, go ahead and equipScavenger to resupply ammo and throw knivesfrom dead players. This ensures that your M4 is always stocked up on ammunition, increasing its longevity for high-kill games.
Now takeFast Hands for faster reloadingto counter the slow reloading of the45-ROUND MAG. Finally, consider choosingQuick Fixfor your Ultimate Perk slot. This provides you withinstant healing after eliminating opponents, keeping your health high for the next engagement.
For Warzone 2, we recommenddropping Scavenger for Overkill. You should not have too much trouble resupplying ammunition in Battle Royale, and you may benefit greatly by equipping another primary weapon for your loadout.
Secondary Recommendations
You do not have to worry too much about your choice of secondary weapon, as theScavenger perk will eliminate the need for a weapon swap. Therefore,consider carrying a launcher, preferably one that is capable oftaking out enemy killstreakssuch asUAVs. ThePILA and the JOKRare both viable choices for keeping the airspace clear and your teammates off the mini-map.
For your Warzone 2 loadout, however, consider taking aSniper Rifle.This weapon choice will be useful for taking out players who are far away from you. You could also open a fight with a Sniper and then finish the job with your M4. Our top picks from the Sniper Category aretheSignal 50,theSP-X 80, andtheMCPR-300.
Next:Modern Warfare 2 FSS Hurricane: How To Unlock & Best Loadout