Toni System Recoil Spring for Glock 19/19X/23/32/45/Adc Defender - 15 lb. Crafted with precision and durability in mind the recoil spring absorbs the backward force generated by the expanding gases when a round is fired. As the slide moves rearward against this resistance the springs tension is essential for the pistols cycle of operation. This cycle includes ejecting the spent casing chambering a new round and resetting the firing mechanism. Glock recoil springs are engineered to provide consistent and reliable performance contributing to the pistols accuracy longevity and user comfort. Regular maintenance and potential replacement of the recoil spring are recommended to ensure optimal function and safety in Glock firearms. Specifications for Toni System Recoil Spring for Glock 19/19X/23/32/45/Adc Defender: Manufacturer: Toni System Color: Black Fabric/Material: Aluminum Gun Make: Glock Gun Model: Glock 19 Weight: 2.06 oz Package Contents: Toni System Recoil Spring for Glock 19/19X/23/32/45/Adc Defender What firearm models does the manufacturer say Toni System Recoil Spring for Glock 19/19X/23/32/45/Adc Defender is compatible with? The manufacturer suggests that Toni System Recoil Spring for Glock 19/19X/23/32/45/Adc Defender is compatible with Glock 19Toni System GLRC-15: Recoil Spring for Glock 19/19X/23/32/45/Adc Defender - 15 lb