Late in the war the Germans developed a hand held anti-airfcraft weapon for the infantry. Fleigerfaust was like the Nubelwerfer in that it clustered multiple barrels around a central barrel. A volley of self-propelled rockets soared at the incoming aircraft. Anyway, Jonathan has reproduced this hand held weapon and has a book on recreating the launcher and the rockets (without armed warheads). Previously he also recreated the Panzerfaust launcher (no warhead as he's not going there).