I'm curious to know your thoughts on the Mec-Gar brand of magazines. I'm specifically interested in their Springfield Armory XD-40 extended 15rnd .40 S&W mag's. I can't tell for sure, but the extended 15rnd mag looks to be the same size as the standard 12rnd, but it's impossible to tell from the only image I've seen online and am curious to know. Has anyone here ever purchased any of their magazines? Pro's & Con's? Does anyone know if the 15rnd mag extends out of the mag well or us flush like the 12rnd.