Shares in US gun companies saw stocks rise as a result of the mass murder in an Orlando LGBT nightclub.
It is a well observed phenomenon that firearm shares rise after a mass killing.
Analysts claim that consumers get spooked by the idea of tougher gun laws and rush to purchase.
Smith & Wesson saw gains of 6.9 percent while other manufacturers registered rises of up to 8.5 percent.
The numbers for the US gun sector are staggering $13.5 bn represents the annual revenue for gun and ammunition manufacture yielding a $1.5 bn profit.