User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-3062440-20110713032405/@comment-4095569-20110715065417

There are different varients of weapons with different names for each model. Theres a plain AK-74, simple enough, then there's the AK-74u which is a shorter, more compact variant (a carbine, if you wish) And there's the AKS-74 where the S stansd for a folding stock.