Mine came with the ladder type covers also. I didn't like them, called S&W customer service and told them that I should have received the Troy covers in their ads. They sent me the Troy covers. It never hurts to try!
When I sent in for the two free mags, I asked for the ones with the pinky extension. They sent the mags without the extensions. I called and asked for the extensions and they mailed them to me. Bottom line, try calling customer service and asking for them before you buy the entire magazine.