Two of the nation’s largest gun sellers announced they will take steps to curb firearm sales . Dick’s Sporting Goods says it will stop selling assault-style rifles and high-capacity magazines, and they’ll also require those buying guns to be over 21, whether it’s required by local laws or not. Walmart will no longer sell guns to people under the age of 21, and they’ll stop selling items that resemble assault-style rifles, including toys and air guns.