User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-92.6.149.17-20110402011823/@comment-1630756-20110402190020

The M4A1 has a higher rate of fire, a shorter barrel and is lighter also. It's like saying why the hell are the SCAR-H and ACR in the same game.