With a factory pull weight of 3 pounds, the Timney Alpha Competition trigger answers the long call for a trigger that has the same feel and performance that matches the reliability of the Glock system by providing an improved trigger design that does not sacrifice any part of the Glock reliability. Staying true to our time honored promise to our customers, this trigger can be installed easily with no gunsmith needed. Product Features Three-pound pull weight Crisp trigger break Teflon nickel (NP3) - trigger bar and sear (this process virtually eliminates friction, allowing for an extremely smooth feel) Uses all stock Glock parts and springs ONLY COMPATIBLE WITH STOCK GLOCK PISTOLS - INTENDED FOR COMPETITION USE ONLY. Calibers: 9 mm & .40 S&W Compatible with the NEW Glock Gen V models