gun sales often skyrocket http://www.usatoday.com/story/news/natio...rated/19836755/ 총기 난사 사건이 일어나면 보통 총기 판매가 늘어난다 the US had 3.3 million in homes various statistics offered pushed prices marketing pushed prices just how ubiquitous these firearms are in American culture quoted eight to nine million of these guns 8 million AR-15-style rifles various statistics 5 million and 8.2 million Other estimates las ventas de armas se disparan e surpreendente – as venda de armas em geral