M&p ultimate striker block - Apex Tactical Specialties S&W M&P Ultimate Striker Block

I purchased this for my Shield 45, but it was a mistake. This will not work with the Shield 45. I had a gunsmith install this in my M&P 9c. It worked great. the trigger pull weight dropped 8 oz, and smoothed out the grittiness. A little expensive, but works great and would positively recommend. Apex is a must for M&P handguns!