Guys that's FPS Russia. Hes an American kid from Georgia and probably closes to 30 then 18, with a fake accent. He made hundreds of these videos including one where he was shooting an anti aircraft gun. Most of the stuff he borrows from someone somewhere. He's been doing this for years and even stared in a vedeo game comercial. His videos were really popular a few years ago until his producer was killed (not related to the youtube videos)