User blog comment:Bovell/Kotaku claims to have MW3's first look. Robert Bowling responds. (Minor spoilers)/@comment-68.183.241.28-20110513222058/@comment-614256-20110513223515

It looks like a G3 with a sniper scope on it. But then again I'm not very knowledgeable about guns so I could be horribly mistaken lol, it could be a modern PSG1 variant like XNightmare said.