This is a Apex Tactical Specialties Trigger known as the Action Enhancement Kit, model 107-003.
The Apex SD Polymer Action Enhancement Trigger directly replaces the factory hinged trigger with a solid body polymer trigger with a center mounted pivoting safety. This trigger is perfect for use in SD and Sigma pistols already equipped with an Apex Spring Kit. The trigger also works as a standalone component.
Features:
Reduces pre-travel by 20%
Reduces over-travel by 10%
Reduces trigger pull weight by 10-15%
Smooth face trigger
