08/07/2014 02:25 am ET Updated Aug 07, 2014

German Gun Designer's Quest For A Smarter Weapon Infuriates U.S. Gun Rights Advocates

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In nearly 30 years at Heckler & Koch, a legendary German gunmaker, Ernst Mauch designed some of the world’s most lethal weapons, including the one that reportedly killed Osama bin Laden. A state regulator once called him a “rock star” in the industry.

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