I recently bought an M&P 40 full size at a gun show. It came with one mag. I took it home and investigated it further and I took it down. I noticed some of the blue was wearing off in places where it would have been holstered a lot. No Biggie right? As I was cleaning it found a lot of wear on certain spots. Meaning it was fired a good amount. I also noticed I couldn't dry fire it unless the mag was installed. That's when I noticed that the mag held 15 rounds. I couldn't believe it so i tested it my self. Yep 15 rounds in the mag and one in the pipe. Come to find out it was a duty piece turned in to the FLL I bought it from. Here's my concern. The mag doesn't say LEO only on it anywhere. I had the FLL look at it himself. However, How can I consider this pre ban if the M&P line up didn't come out until 04 yet the ban was implemented in 94? Keep in mind I am a brand new LTC holder with limited knowledge but I am getting better every day. So bottom line. Am I carrying a high capacity mag or a legal mag? Keep in mind that this problem has prevented me from making it my daily carry.