User blog comment:Postapocfan1999/Joel (The Last of Us) vs Bill (Left 4 dead 1)/@comment-4661256-20130716044743/@comment-72.35.125.31-20130718013122

Unless it's been customized their is no such thing as a full auto M16A2. The A2 was semi auto or 3 round burst. The A3 was the full auto capable variant.