What is the difference between the M&P9 Pro Series (#178010) and the M&P 9L (#205301)? It looks like the pro series has a fiber optic sight, but that's about all I can tell.
I just picked up the M&P pro 2 weeks and love the difference in the trigger pull. I got a better deal on it also so that helped make the decision but I'm glad I did. Only shot the other as a rental so I'm not bashing it, just love the one I bought. Best shooting gun overall I've ever owned.