The German 37mm Flak Gun was a multi-purpose weapon, which started out as a smaller and easier deployed Anti-Aircraft weapon. Crewed by 6, it could be deployed by small vehicles. Built between 1936 and 1945, The 37mm Gun weighed 4,400-pounds with a 41-inch barrel. Using a 263mm, fragmentation shell which weighted 1,000-pounds, it had a 14,000 foot range. An average crew could fire 150-rounds per minute. The Hundred was so successful, that variants were created as a Deck Gun for U-Boats and as an Anti-Tank Gun.