The single most important upgrade for the Glock. Zev's Triggers are the best currently on market and holds several world records. Flatter trigger face and trigger safety is 3 times wider than stock trigger. The proprietary trigger bar refinements the trigger operates smoothly through the entire length of pull. Crisp tactical reset gives user a clear feeling. Trigger weight can be adjusted as low as 3lbs. Pre-travel and over-travel are adjustable to allow shorter pull. Made in U.S.A.