User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-2049068-20100707145740/@comment-189.190.27.214-20101231052209

Nope, the Cx4 is designed for the civilian market, ergo, it is not an assault rifle, besides being a 9x19mm Parabellum rifle, it is a sub-carbine.