“Donald Trump Jr. helped take an online retailer known as the ‘Amazon of guns’ public last year,” Reuters reports.“Now, GrabAGun, where the U.S. president’s son is a shareholder and board member, could reap a windfall from a proposed rule change at Trump’s Bureau of Alcohol, Tobacco, Firearms and Explosives that would make it easier to ship guns directly to people’s homes.”“If finalized, the rule would be among the most consequential changes to the U.S. gun policy in two decades, potentially driving huge growth in online gun sales.”