I received my m&p 40C from Budsgunshop.com but received one mag that had the curved bottom and the other mag was flat bottomed and doesn't lock in as well. Is the 109203 model supposed to ship with mags of two different types? I see the all the M&P compacts on smith and wesson's website have the curved bottom magazine. Did they ship a mag for the 10rd 40 full size with the compact? Hmmmm.