We may earn a commission when you buy through links in our articles. Learn more.

How to unlock the MW2 Slimline Pro optic

Grinding for attachments like the MW2 Slimline Pro optic is hard enough work, but the Slimline Pro optic is now unlockable after a brief bug

Modern Warfare 2 Slimline Pro optic

The MW2 Slimline Pro is probably one of the best attachments in the game, reminiscent of the impossibly clear red dot sight you could equip in previous CoD games.

So, how do you go about attaching this optic to your best Modern Warfare 2 guns? Well, as with the other attachments in the multiplayer game, you need to level up a specific weapon platform in the Gunsmith. There used to be an issue with this optic that stopped played from being able to attach it using the Gunsmith system, but that bug was squashed weeks after MW2 launched.

How to unlock the Slimline Pro optic

The Slimline Pro optic is available as part of the Lachmann & Meer weapon platform. Simply level the Lachmann sub Mp5 to level 11. We say it’s simple, but getting the MP5 SMG itself requires first getting the Lachmann-762 to level 13, and then the Lachman-556 to level 12.

While you’re modding your guns, check out our guides to the best SP-X 80 loadout and the best Vel 46 loadout, two of the guns which, paired together, make up one of our overall best Modern Warfare 2 loadouts. Just imagine how good they would be with a clean optic like the Slimline Pro.