The Certified Special 2-Stage Flat Trigger System is a precision one-piece trigger designed for Glock Gen 1-5 pistols featuring advanced safety technology and USPSA approval for competitive shooting divisions.Certified Special 2-Stage Flat Trigger for Glock Gen 1-5USPSA approved for ISPC Standard Optics and Open divisionsAdjustable pull weight: 2.5 to 6 lb with zero creepFrame-Decoupled Safety with pivot safety for smooth engagementTKR and CLKR Technology for enhanced performanceRedesigned Safety Stop and TMDE PadRelief pocket backplate for improved striker clearanceEnhanced drop safety and impact durabilityEngineered for competitive shooters and enthusiasts seeking consistent trigger pulls improved safety features and precision performance in their Glock pistols across all generations.