The Shield Action Enhancement Trigger Kit directly replaces the factory hinged trigger with a red anodized, solid aluminum trigger body which reduces pre-travel and over-travel by approximately 20%. It features a smooth face with a center mounted pivoting safety that maintains factory safety values. The center mounted pivoting safety bar prevents unintended operation by creating a trigger block that will not disengage unless the shooter places their finger directly on the trigger face. The Apex Shield Duty/Carry Kit was designed to provide the M&P Shield pistol owner a smooth, consistent trigger pull that is approximately 2 lbs lighter(based on variations in factory t Mfg: Apex Tactical Specialties Inc SPECS: Kit includes: Red Anodized Aluminum Shield Action Enhancement Trigger, Shield Duty/Carry Kit(Fully machined sear, Ultimate Striker Block, Striker Block Spring, Sear Spring(1/8"), 4lb rated Trigger Return Spring, Trigger Return Spring Installation Shield Slave Pin, Talon Tactical