The Action Enhancement Kit for standard frame Gen 3 and Gen 4 pistols features the Apex Polymer Action Enhancement Trigger"" with Trigger Bar"" an Apex Performance Connector and Apex Ultimate Safety Plunger. The Action Enhancement Kit for standard frame Gen 3 and Gen 4 pistols features the Apex Polymer Action. The kit is a direct drop-in replacement of the factory polymer trigger"" connector and striker plunger"" and provides for a smoother trigger pull with reduced trigger pull weight"" reduced travel"" reduced reset and a crisp break.