Really big improvement over stock shield 9 trigger - Apex Tactical Specialties Action Enhancement Trigger and Duty/Carry Kit for S&W M&P Shield

I went and shot my Shield 9 after installing the Apex trigger, and for me the difference is pretty significant. My double-tap/follow-up shots and faster and feel so much better. The trigger reset is clean and crisp. I'm very glad I did this upgrade.

Caution & the downside. The Shield 9 disassembly and trigger installation was not easy. If you are going to do this install yourself make sure you have the right punches and use roll pin punches. The sear housing was difficult to get in because the lower corner kept wanting to dig into the polymer frame, but I finally got it in.

This is a great kit, but I feel it's over priced for the parts you get. This could be my ignorance not knowing the labor into machining these parts.

I thought that Talon Tactical Tool was going to be included for installing installing the new spring and striker safety.

All-in-all I am happy with this kit, and the difference it makes in the trigger is very noticeable to me, especially in double-taps and rapid fire.