ToplineShares of gun manufacturers spiked immediately following the assassination of conservative activist Charlie Kirk on a college campus Wednesday, a market trend that typically happens after high-profile shootings as people tend to arm themselves and fear possible restrictions on gun sales.Shares of Smith & Wesson jumped Wednesday afternoon. (Photo by Ethan Miller/Getty Images)Getty ImagesKey FactsSmith & Wesson Brands Inc., a Tennessee-based gun manufacturer, saw shares jump just before 3 p.m. EDT, aro ...