Centennial Defense Systems Trigger Spring for Glock 42 43 43X 48 Plus 50percent Power Lighter Trigger Pull. It is available in two different weights plus 25percent and 50percent power allowing you to fine tune your trigger pull. Specifications for Centennial Defense Systems Trigger Spring for Glock 42 43 43X 48: Manufacturer: Centennial Defense Systems Color: Stainless Steel Fabric/Material: Stainless Steel Gun Make: Glock Gun Model: Glock 48 Glock 43X Glock 43 Glock 42 Package Contents: Centennial Defense Systems Trigger Spring for Glock 42 43 43X 48 What firearm models does the manufacturer say Centennial Defense Systems Trigger Spring for Glock 42 43 43X 48 is compatible with? The manufacturer suggests that Centennial Defense Systems Trigger Spring for Glock 42 43 43X 48 is compatible with Glock 42 Glock 43 Glock 43X Glock 48Centennial Defense Systems 20773: Trigger Spring for Glock 42 43 43X 48 Plus 50percent Power Lighter Trigger Pull