Shares of gunmakers Smith & Wesson Holding Corp. and Sturm, Ruger & Co. have shot up over the past year, and a number of mutual funds are buying up the companies' shares in order to cash in on America's love of firearms. There are 151 mutual funds holding Smith & Wesson’s stock and 131 mutual funds holding Sturm, Ruger’s stock, according to Morningstar’s most recently available data. Read the original story from MarketWatch.