User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-1861404-20110402011655/@comment-908633-20110402184658

The M16A4 (Standard issue) can only be single fire or 3 round burst. The AK-47 and all Assault Rifles, and all submachine guns (that I have seen) are capable of semi-automatic fire.