A Copenhagen audio startup bet that cops and bodyguards deserved better than the earpiece that came in the box. Seven years and five patents later, its 360 sits in the ears of security details who can't afford to miss a word.
Two sound-studio partners thought they could build a quieter .22 can in a garage. Eighteen years later, SilencerCo runs an 80-yard indoor range, an integrally suppressed pistol, and a lobbying habit - and the federal tax on the thing they sell just dropped to zero.