How to level up guns fast in Modern Warfare 3

Modern Warfare 3 player holding LMG with magazine belt
Credit: Activision

Modern Warfare 3 player holding LMG with magazine belt
Credit: Activision
December 6, 2023: Season 1 of Warzone and Modern Warfare 3 is here! We've got all the intel to help players level up guns as fast as possible.

Want to know how to level up guns fast in Modern Warfare 3? We've got everything you need to know! Before the full launch of Modern Warfare 3, players can load into multiplayer to experience Sledgehammer Games' latest project for the very first time.

There's an extensive gun list to master, and many players will want to level them up quickly. The attachments unlocked through levelling up can make players a menace on the battlefield, no matter the map.

Before we reveal how to level up guns fast in Modern Warfare 3, check out our other guides containing intel on aftermarket parts and the best mouse and keyboard settings to use.

How do I rank up guns fast in Modern Warfare 3?

Across all multiplayer game modes, weapon experience is earned by scoring kills, headshots, and generally performing well with a weapon. Players looking to speed things up should read on for handy tips and tricks to reach the top level in no time.

Using the weapon

This may seem obvious, but there's really no avoiding the grind in Modern Warfare 3. It will be difficult at first with the limited attachments, but players will find the weapon easier to use as they spend time with it, and can address its flaws at the gunsmith.

Modern Warfare 3 player firing gun in front of player using riot shield
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Credit: Activision

Double XP events

Another quick way to level up guns fast is by taking advantage of double XP events. These will pop up periodically throughout Modern Warfare 3's life cycle, and provide great opportunities to level up the entire weapon arsenal so you can be ready to use any of them if they slot into the ever-changing meta.

Does Modern Warfare 3 weapon progression carry over to Warzone?

Yes, all Modern Warfare 3 weapon progression carries over to Warzone .

The grind can be staggering, but progression carrying over is a god-send now that Season 1 is finally upon us. We can only hope the work players put into grinding up weapon XP will carry over into the next Call of Duty game, too.

That's everything there is to know about how to level up guns fast in Modern Warfare 3. For more Call of Duty intel, check out our Warzone page or use our guides to the best Haymaker and Rival 9 loadouts.