1) is my new (bought at Christmas) Commander made in the US, or assembled here? Or how much of each? 2) How much MIM? 3) is it okay to shoot +P loads through it? 4) am I stuck with the sights that came on it or can night sights be put on it? 5) why does my Colt Commander come with a lifetime warranty and my Colt 6920 (AR) come with a year warranty? Just things I've wondered for a little bit. Thanks guys/girls!