

Brengun plan to release a kit of the WWII experimental Surface to Air Missile that was undertaken as part of the German rocket programme. It was largely abandoned late in the war.
As with so many of htese project and interesting technical exercise and historical curiosity, but how effective could they have been with time and resources running out?
http://www.brengun.cz
http://en.wikipedia.org/wiki/Wasserfall
http://www.luft46.com/missile/wasserfl.html