You may use your Maestro card anywhere in the US that accepts MasterCard debit cards. You must physically have your card present and enter your PIN. However, Maestro cards may not be used in the US for online purchases. All US issued debit MasterCards work internationally on the Maestro and Cirrus networks.
Maestro cards are recognized worldwide, offering convenient access to money at home and abroad. Plus, because debit purchases are deducted directly from your account, it's easy to track where your money was spent. Payments made via Maestro cards also reduce the need for physical cash, making your money safer.
While a lot of people say the name is dumb it is a referance both litterally and figuratively to Heckler & Koch (aka HK, real manufacturers of the G3, MP5 and the other equivalent Lachmann guns). "Lachmann" is a real German surname and roughly translates to "laugher".
After completing multiple matches with the Lachmann-762 and the Lachmann-556, the Lachmann Sub MP5 will be unlocked once the Lachmann-556 hits Level 12 in Modern Warfare 2. It should be mentioned that an excellent build has sourced the Attachment setup for Lachmann-762 above from The Loadout.