When the public asks, “How did we get here?” after each mass shooting, the answer goes beyond National Rifle Association lobbyists and Second Amendment zealots. It lies in large measure with the strategies of firearms executives like [Richard E.] Dyke. Long before his competitors, the mercurial showman saw the profits in a product that tapped into Americans’ primal fears, and he pulled the mundane levers of American business and politics to get what he wanted.

Dyke brought the AR-15 semi-automatic rifle, which had been considered taboo to market to civilians, into general circulation, and helped keep it there. A folksy turnaround artist who spun all manner of companies into gold, he bought a failing gun maker for $241,000 and built it over more than a quarter-century into a $76 million business producing 9,000 guns a month. Bushmaster, which operated out of a facility just 30 miles from the Lewiston massacre, was the nation’s leading seller of AR-15s for nearly a decade. It also made Dyke rich. He owned at least four homes, a $315,000 Rolls Royce and a helicopter, in which he enjoyed landing on the lawn of his alma mater, Husson University.