User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-82.38.219.232-20110706210946/@comment-3523988-20110709013905

Ergonomics are just an extra detail, but the real good stuff of the HK416 is that you can sink it in mud, water, sand, etc. nothing will happen, while the M4's upper receiver literally explodes when sinking it in water.