In the wake of last week's shootings at Sandy Hook Elementary School, investors are selling off shares of gunmakers Smith & Wesson (NASDAQ:SWBI) and Sturm, Ruger (NYSE:RGR). Guns and ammo retailers aren't faring much better, as shares of sporting-goods chains Cabela's (NYSE:CAB) and Dick's (NYSE:DKS) continue to slide, while Wal-Mart (NYSE:WMT) -- long known among shooting enthusiasts for having some of the best prices on ammunition around -- are suffering as well.

With Congress moving swiftly to write new regulations for gun sales and ownership, this all seems a logical reaction to the headline news. Yet at the same time as investors rush to sell their shares, gun buyers are rushing to buy firearms -- before any new laws hit the books. Could it be that investors are missing a golden opportunity to "get greedy when others are fearful"?

Fool contributor Rich Smith thinks so, as he explains in today's video.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.