I haven’t seen any other posts on this but just so everyone knows. As all owners of the compact version of the M&P know only one mag comes with a finger extension and the other comes with a standard floor plate. I called the nice folks at S&W C/S and asked if I was able to order just the extension so I wouldn’t have to spend $40- for the whole mag. and they said I could order one but I didn’t need to, they would send one to me free of charge. I haven received it yet but I’m sure its on its way. I'll post again when I get it.