The Alpha Competition Series trigger is a replacement trigger for the Glock Gen3 and 4 pistols. Featuring a factory pull weight of 3 pounds; trigger can be installed easily without gunsmith; crisp trigger break; Teflon nickel (NP3) trigger bar and sear (this process virtually eliminates friction, allowing for an extremely smooth feel) and a straight aluminum trigger with safety blade. Uses all stock Glock parts and springs. Compatible with Glock Gen3 17/17L/19/22/23/24/34/35; Gen4 17/19/22/23/34/35.