The ZEV Technologies Adjustable Fulcrum Drop-In Trigger Kit is the single most important upgrade a user can make to their Glock pistol. Our triggers feature a wider trigger pad and safety for better user engagement and will help build proper muscle memory for improved consistency and accuracy.The trigger weight can be adjusted to as low as 3 lbs, while a noticeably crisp reset improves the ability to ride the reset for better follow up shot speed and placement.Pre-travel and over-travel are adjustable to allow for a shorter pull, crisper break and faster reset. The ZEV Trigger Bar is the ONLY proprietary GLOCK replacement trigger bar that reduces travel,and provides professional, crisp trigger pull while keeping all factory Glock safeties intact.INCLUDED COMPONENTS ZEV Adjustable Fulcrum Trigger and Trigger Bar ZEV Ejector Housing (Gen 1-4): EJECTOR-HOUSING-9-B ZEV PRO Connector: CONN-PRO ZEV Trigger Spring: SPR-TRG ZEV PRO Striker Spring: SPR-STK-PRO ZEV Stainless Steel Firing Pin Safety: FPS-SS ZEV Firing Pin Safety Spring: SPR-FPS ZEV 2lb Striker Spring: SPR-STK-2LB ZEV 3lb Striker Spring: SPR-STK-3LB