Sniping from out of map on Ambush
Note: Two players are required. When playing on the OpFor/Spetznas side, go left as soon as you spawn into the little area behind the yellow station wagon. Have one person keep jumping into the corner while the other crawls under them. When the crawling person is completely under the other, crouch and then stand (not at the same time but one after the other). If done correctly, the other person should have jumped over the wall and be out of bounds.