This is a Apex Tactical Specialties Trigger known as the Action Enhancement Trigger, model 102-116.
The Action Enhancement Kit for Gen 5 Glock pistols features the Apex Action Enhancement Trigger" with Gen 5 Trigger Bar" and Apex Performance Connector. The kit is a direct drop-in replacement and provides for a vastly improved trigger pull while maintaining factory safety values.
Features:
Reduces trigger pull weight by approximately 1 lb.
Smooth uptake and reset
Reduces trigger pre-travel, overall travel and reset distance