The Powder Toy - Schwerer Gustav Rail gun by AviatorGuy

A WWII German "Schwerer Gustav" Rail Gun. The two built,Gustav and Dora, fired 800mm guns that shot shells weighing seven tonnes up to 23 miles. Both were destroyed before the wars end.

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The Powder Toy - Schwerer Gustav Rail gun by AviatorGuy

ToysEasy YW2214 Gustav Railway Gun - Show.Z Store

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How far can naval artillery shoot? - Quora

ToysEasy YW2214 Gustav Railway Gun - Show.Z Store

Schwerer Gustav - Wikipedia

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In Stock Transformation TOYSEASY YW2312 Schwerer Gustav YW-2312

In Stock Transformation TOYSEASY YW2312 Schwerer Gustav YW-2312

ToysEasy YW2214 Gustav Railway Gun - Show.Z Store