The Lachmann Sub (MP5) is one of the stronger SMGs in the game, thanks to the beta. Players are now in a rush to try it out, unlocking their way through the family tree you get it. However, since the unlocking method is confusing, we have decided to help you by explaining how to unlock the MP5 in MW2.

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Here is a quick guide on how to unlock the MP5 in MW2.

How to unlock the MP5 (Lachmann Sub) in MW2¶

There’s quite a long process to unlock the Lachmann Sub in MW2. To summarize it, you need to do the following in order:

1. Reach Rank 16 and unlock the Lachmann 762
2. Get the Lachmann 762 to level 13 to unlock the Lachmann 556
3. Get the Lachmann 556 to level to level 12

Once you have completed those steps, you will unlock the MP5 in MW2. It’s simple enough instructions, but it’s a long and confusing grind, thanks to the awkward UI in-game.

One of the ways you unlock weapons in MW2 is by progressing through the new weapon platform system. Each weapon belongs to a weapon platform. Some weapons platforms have lots of weapons to unlock, such as the Lachman and Meer weapons, which is what the MP5 is under. It means you’re going to have to try lots of weapons and progress them if you want to unlock certain things.

While you have to grind many weapon levels before unlocking the MP5 in MW2, it does mean you will have plenty of attachments unlocked. The good thing about this system is that when you do unlock a weapon deep in a weapon platform, you can jump into the gunsmith and add plenty of attachments to it as soon as you get it. That way, you get a better feel for how good the fun is, without having to do the bare-bones grind for the gun as you normally would do.