This is a Apex Tactical Specialties Trigger known as the Action Enhancement Kit, model DCAEK.
The Apex Duty/Carry Action Enhancement Kit is engineered to provide the M&P (9mm" .357Sig & .40S&W only) pistol owner a smooth" consistent 5.0 to 5.5 lbs. trigger pull with the advantages of shorter over-travel and shortened trigger reset. All of the components work together to provide a pull weight within the acceptable range for a top end" service pistol. The kit itself is designed to be drop-in and should not require further gunsmithing" however" armorer or gunsmith installation is recommended.
Features:
Reduces over-travel
Smooths trigger pull
Keeps pistol at a safe 5-5.5 lb. trigger pull weight for Duty/Carry applications
