Watch a Fully Automatic Electromagnetic Pulse Rifle Demolish a LaptopEric Limer8/08/13 12:37pm1988EditPromoteDismissUndismissHideGo to permalink Mag-guns are pretty impractical, but they're always fun to fire. Larsplatoon knows first-hand. A few years ago he put together a crazy single-shot coilgun that tore up household appliances one 1.25 kilojoule shot at a time. Now, he's opted for full auto. And it's just as fantastic to behold.