I believe that Sig usually has #8 and #8 front and rear sight numbers for 9mm and 357sig pistols. However, both my M11-A1 and 225-A1 have the #6 and #8 configuration. Anyone know why? I was looking to get some Trijicon HDs, but for that kind of money, I want the best choice for the gun. I'm guessing at yardage under 25 yards or so, it won't make much difference.