Hmm. We COULD use an MP40 and an AA tank. But as for the MP40, It mustn't be like the "generic" group of machineguns. It would have to be less or more accurate, and more or less deadly. As for an AA tank, it might be similar to the Old-School Rifle by Bushido, but it would be rapid-fire and would spawn not a projectile, but an explosion in the sky, making it deadly and like real flak.