Ghost Inc Unit 3.0 Complete Trigger Kit Glock Gen 1-5 Silver GHO-UNIT-3-TK. You can change specific springs to improve a particular aspect of the trigger pull or do a complete upgrade. Accurately calibrated spring weights deliver consistent force through the entire compression and release cycle to give you a light refined trigger pull without sacrificing the reliability of your pistols Safe Action system. Trigger Spring has nearly 30percent more power than factory spring which actually reduces pull by as much as 1 lb. for improved control. This produces faster trigger reset for quicker follow up shots. Reduced power Safety Spring reduces friction caused by the firing pin safety further smoothing the pull. Striker Spring is designed for improved consistency and durability over factory spring. Specifications for Ghost Inc Unit 3.0 Complete Trigger Kit: Manufacturer: Ghost Inc Color: Silver Gun Make: Glock Gun Model: All Glock Gen 5 All Glock Gen 1-4 except Glock 42 Glock 43 Glock 48 Features of Ghost Inc Unit 3.0 Complete Trigger Kit Fits all GLOCK Gen 1-5 pistols except 42/43/43X/48 Package Contents: Ghost Inc Unit 3.0 Complete Trigger Kit Drop-in Unit Performance 3.0 Connector 4lb Reduced Power Striker Spring 6lb Extra Power Striker Spring Reduced Power Safety Block Plunger Spring 6lb Extra Power Trigger Spring What firearm models does the manufacturer say Ghost Inc Unit 3.0 Complete Trigger Kit is compatible with? The manufacturer suggests that Ghost Inc Unit 3.0 Complete Trigger Kit is compatible with All Glock Gen 1-4 except Glock 42 Glock 43 Glock 48 All Glock Gen 5Ghost Inc GHO-UNIT-3-TK: Unit 3.0 Complete Trigger Kit Glock Gen 1-5 Silver