Best upgrade - Apex Tactical Specialties Action Trigger Assembly Enhancement Kit

The Apex trigger kit is by far the best upgrade for any M&P pistol. Crisp pull and quick audible reset, huge difference when compared to the factory trigger. I installed the kit myself, wasn’t very difficult, just make sure you have the right tools to work with. Plenty of online instructions to guide through the process. I liked it so much I installed another kit in my wife’s Shield.