BUTLER, Mo. — Buy a truck and get a free AK-47 gun. That's the deal a Missouri truck dealer is offering new customers who buy a pick-up truck in August. Mark Muller, owner of Max Motors in Butler, says he knows people will be bothered by the promotion. But not to worry, Muller is not handing out free guns. Instead, he will give buyers a voucher to use at a gun store after they obtain a license to carry a concealed weapon. The AK-47 is an upgrade on a previous promotion in which Muller gave away vouchers for the price...