Apex Tactical Specialties Action Enhancement Trigger kit, Duty and Carry, Aluminum, Black, For M&P 9/40 , Does Not Fit 2.0 100-079 The Apex Action Enhancement Aluminum Trigger & Duty/Carry Kit for M&P (9/40 only) replaces the factory trigger" sear and safety plunger to deliver a smooth" crisp trigger pull that's ideal for duty/carry purposes.