Precise Letoff, Fast Rest, Fully-Adjustable For Takeup & Overtravel; Drop-In Installation Convenient kits combine easy drop-in installation with the performance benefits of a custom trigger job for precise shot placement and fast followup shots. Give your Glock an ultra-smooth pull, clean letoff, and short reset without impairing the reliability of the factory safeties. Fully adjustable for pre-travel and over-travel via two easy-to-access hex-head screws (wrench included), so you can tune trigger feel to your exact requirements for maximum control. Trigger shoe and trigger safety are precision machined from 6061 T6 aluminum billet for precise engagement, smooth movement, and superb responsiveness. Wide, ergonomically shaped safety lever sits completely flush with trigger face when fully depressed for proper disengagement. Aluminum parts are hardcoat anodized for extra strength and corrosion resistance; matte black finish blends with factory frame and slide finish. Engagement surfaces on the stainless steel trigger bar are mirror polished for outstanding sensitivity and consistency. Basic Fulcrum trigger includes preassembled trigger shoe, safety lever, and trigger bar. Available in Small Frame model for 9mm/.357 Sig/.40 S&W pistols and Large Frame trigger for .45 ACP/10mm pistols. Complete Drop-In Trigger Kit adds to the basic trigger a replacement trigger block, including ejector, connector, and trigger spring, to further refine the trigger pull. A reduced-power striker spring produces a lighter-feeling trigger for competition use and a lightweight titanium safety plunger with a precision-shaped dome head, polished surface, and upgraded plunger spring for exceptionally smooth operation without sacrificing reliability. Also includes an upgraded factory-weight striker spring, so you can return your pistol to factory spec for daily carry and duty use. Ultimate Drop-In Kit adds to the Complete kit, a skeletonized stainless steel striker. The striker?s reduced mass and highly polished surface speeds lock time and delivers an even lighter, smoother perceived trigger pull, plus ultra-fast reset so you?re ready for follow-up shots.