The Action Enhancement Kit for Glock pistols features the Apex Action Enhancement Trigger with Gen3 Factory Trigger Bar Apex Ultimate Safety Plunger for Glock and Apex Performance Connector. The kit is a direct drop-in replacement of the factory polymer trigger safety plunger and connector and provides for a smoother trigger pull with reduced travel reduced reset a crisp break and approximately a one lb. reduction in trigger pull weight. *Note- This model does not fit the 10mm .45 ACP or .45 GAP caliber or Glock Gen5 models.