Lego Gears Of War fully automatic Lancer rifle

With working chainsaw attachment, because those zombies won't cut themselves in two ...



Make sure you watch it all the way through, to see how the mechanisms work.   The music, of course, is Gustav Holst, Mars the bringer of war, from The Planets.

You, too can make Bad-Ass Lego guns.  There's a book that describes how; unsurprisingly, it's called Bad-Ass Lego Guns:



Via The Register.