The Apex Action Enhancement Aluminum Trigger Kit (Duty and Carry) is a drop-in kit with a black aluminum trigger for the original S&W M&P. It replaces the trigger, sear, and safety plunger, shortening over-travel and reset with a pull of roughly 5.0 to 5.5 pounds. Features: Action Enhancement Aluminum (AFFT) Trigger Kit, Duty and Carry Black aluminum trigger Replaces trigger, sear, and safety plunger Pull weight approximately 5.0 to 5.5 pounds Shorter over-travel and reset Fits the original S&W M&P in 9mm and .40 only. Not for the M&P .45, not for the M2.0, and not for the Shield.