I was wondering if anyone knew if you could swap the barrel from a 40c into a 9c. I currently own the 9c and if I could obtain a .40 cal barrel and mags, would they work in the 9c frame? I've heard of other makes of guns that you can do this on and was wondering if it will work for the M&P. I looked back a few pages and couldn't find anything on it, even did a search of the forum and came up empty handed.