The Action Enhancement Kit for Glock pistols features the Apex Action Enhancement Trigger, with Gen 3 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 1 lb. reduction in trigger pull weight. NOTE: This model does not fit the 10mm, .45 ACP, or .45 GAP caliber or Gen 5 models.