I talked with a Dick's employee about the new rules. He said that they didn't stock many AR's or mini's to begin with and his thought was that it's a marketing ploy to attract the anti gun crowd to choose their store over the other stores that sell similar products related to organized sports which is what they sell the most.
This store is located in a mall only 2 doors down from Sports Authority and across the street is a Gander Mountain.
"Good people drink good beer."
Hunter S. Thompson