For A Smoother, Crisper, More Refined Trigger Pull Drop-In Installation Drop-in parts give your Glock® a smooth, crisp, light pull that helps promote consistent, match-grade accuracy. Change specific components to improve a particular aspect of the trigger pull, or do a complete upgrade. Fits all Glock® pistols. Precisely calibrated spring weights deliver consistent force through the entire compression/release cycle to give you a light, refined trigger without sacrificing the reliability of your pistol's Safe Action system. High-stress, aerospace-grade stainless steel spring wire is heat- and cryo-treated for 99.99% consistent energy output, so trigger pull feels the same every time. Trigger Spring has nearly 30% more power than factory spring, yet actually reduces pull by as much as 1 lb. for improved control. Also produces faster trigger reset for quicker follow-up shots....