MEC-GAR +2 ADAPTER (NOT SHIPPED TO RESTRICTED STATES) F42099-SET
[F42099-SET +2 POLYMER BASE MAGS]

Ordered for my M&P 9C on Sat and it arrived on Monday. Fast shipping, really appreciate it. Install was straighforward and although the plate extends forward of the grip (not flushed), the fit is pretty good. Fits 14 rounds no problem and I cycled the rounds a few times and they did. Obviously I will have to test it out on the range to make sure I don't have any malfunctions. I did notice that the empty mag does not eject as readily as it did with the stock base plate. This probably has to do with the fact that it extends 2 rounds while using the stock springs. Will have to practice mag exchanges during the range to see how it really functions and adjust accordingly. So far so good and hope they function well at the range so that I can trust them as my carry mags.