Railway Gun Military Theme WWII Building Block Set The Schwerer Gustav was a German 80 cm (31.5 in) railway gun. It was developed as a siege gun. The gun weighed nearly 1,490 tonnes when assembled, and could fire shells weighing up to 7.7 tonnes with a range of 47 kilometres (29 mi).Near the end of the war in 1945, the Germans destroyed the Gustav in order to avoid it being captured by the Red Army of the Soviet Union. Contains 3,846 blocks. Compatible with all major brick building brands! Great for your military themed block collection. 100% Satisfaction Guarantee. GUARANTEED NO BUILDERS LEFT OUT: Having problems with your order or need replacement parts? Please contact us via buyer/seller information. We will strive to provide the best customer service possible! Product comes unassembled in original packaging with detailed printed paper instructions.