I bought an M&P 5.7 just beause I was intrigued by the Tempo system, I had no particular interest in the 5.7 round. Mine works well, and is a lot of fun to shoot. Although the operating system is different, I have two othe S&W M&P's in 9mm (a 1.0 & 2.0) that I also like very much, and have had...