I'm a member (and administrator) at our local forum (
www.carolinashootersforum.com) and several members there have reported seeing "black rifles" for sale at some NC and SC Walmarts. Specifically mentioned have been a Bushmaster AR15 carbine and Smith and Wesson M&P 15-22's. None of my local stores seem to be stocking these, but stores around the Charlotte, NC/Fort Mill, SC area and I believe a Raleigh, NC store have been mentioned.
Anyone seeing this in any Walmarts in other areas? Seems to be a broadening of their product line from the typical hunting rifle/shotgun selection they've historically sold.