Centennial Defense Systems Lower Parts Kit for Gen 1-3 Glock 26 Serrated 2.5lb Mag Catch Spring 5lb Trigger Spring Black. Specifications for Centennial Defense Systems Lower Parts Kit for Gen 1-3 Glock 26: Manufacturer: Centennial Defense Systems Gun Make: Glock Gun Model: Glock 26 Model Generation: 3 2 1 Package Contents: Centennial Defense Systems Lower Parts Kit for Gen 1-3 Glock 26 Trigger Housing with OTS Magazine Catch Spring (2.5lb or 5lb) Slide Lock Spring Trigger Spring (5lb or 6lb) 3.5lb Connector Extended Slide Release Extended Mag Release (Serrated or Stippled) Extended Slide Lock Lever Trigger Pin Trigger Housing Pin Locking Block Pin What firearm models does the manufacturer say Centennial Defense Systems Lower Parts Kit for Gen 1-3 Glock 26 is compatible with? The manufacturer suggests that Centennial Defense Systems Lower Parts Kit for Gen 1-3 Glock 26 is compatible with Glock 26Centennial Defense Systems 50241: Lower Parts Kit for Gen 1-3 Glock 26 Serrated 2.5lb Mag Catch Spring 5lb Trigger Spring Black