Just ordered a new M&P Pro 9mm 4.25 barrel with night sights (178035) from Oak Hill.
My local gun shops didn't have the gun in stock and said that t could take months before they could get one! It took about 30 minutes of on line search to find a dealer with one in stock.
I have the 9mm 5 inch barrel Pro and love it, but I am considering getting a concealed permit and the shorter barrel length and night sights are appealing.