Are the Juggernauts in MW2 real?

Answer 1

Sort of. Their armor is based on the U.S. military's C.P.E. (Cupola Protective Ensemble); which is a modified E.O.D. suit used as enhanced body armor for exposed vehicle turret gunners. So in that regard, yes it's real. However, in the real world, no one would be running around wearing this as infantry field armor. It's too heavy, hot, slow, and bulky to even walk in, let alone run after someone in.