Railguns are the stuff of science fiction - but they’re real, and you can even build one yourself. This video takes you step by step through the process of making a DIY railgun, showing how it works ...

An infographic displayed by the company claims its multi-mission railgun can fire projectiles at speeds up to Mach 6. Three variants were listed, ranging from 3 to 32 megajoules of energy capacity, ...