I recently acquired my M&P 45 and have put approximately 500 trouble free rounds through it. I do not shoot it as well as my S&W 1911PD. I think one of the primary reasons is the front sight. It is small and hard to see. I would prefer a low light sight over a fiber optic but either would be better than stock. What have you found available? What I find from Midway or Brownells seems to be for the 9mm or .40. What's out there for our big bore?