This is a Apex Tactical Specialties Trigger known as the Apex M&P M2.0, model 100-179.
The Apex Action Enhancement Aluminum Trigger & Duty/Carry Kit for the M&P M2.0 directly replaces the factory hinged trigger with a solid body trigger" the sear and safety plunger for the idea duty/carry trigger performance.
Features:
Reduces trigger pre-travel and over-travel by approximately 30%
Reduces trigger pull weight by approximately 1 lb.
Smooths trigger pull