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Dude builds world’s first semi-automatic portable railgun, uses it to kill a laptop

A couple of years ago, a Imgur user by the name of NSA_Listbot showed off one of the most impressive DIY creations ever attempted: an actual handheld, portable railgun. Its ability to fire plasma projectiles at speeds topping 550 mph was an incredible accomplishment. So, what's the builder of the first handheld railgun do to top himself? Why, he makes it three times as powerful, shrinks it by half, and adds a semi-automatic firing mechanism, of course! This is the SR-1, and it's the first semi-automatic portable railgun ever built.
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