Three things, 1) I don't see the need for any sharp pointy impact device on the end of my rifle you can easily muzzle punch somebody with a factory bird cage just as well as anything else. 2) If your close enough to muzzle punch a person you are also close enough for them to grab your weapon. And 3) if you have to muzzle punch someone why not just got to hard empty hands or less then lethal tools?
That looks like some jack wagon end of the world zombie BS to me.
