User blog comment:Postapocfan1999/Joel (The Last of Us) vs Bill (Left 4 dead 1)/@comment-10190509-20130714035455/@comment-4552610-20130716031410

The rifle butt is much more used to knock enemies back and when you don't have an actually good melee weapon on hand, like, say, a knife, which pretty much ALL soldiers are trained in using. A knife will work WAY better than a rifle butt.