Centennial Defense Systems Stainless Steel Guide Rod Assembly for Gen 1-5 Glock 2627 No Coating 20lb Spring. This eliminates guide rod flex and ensures it will not chip crack or break like plastic guide rods providing a lifetime of reliable service. Recoil springs are manufactured of certified materials heat treated shot peened and stress relieved to maximize durability. Specifications for Centennial Defense Systems Stainless Steel Guide Rod Assembly for Gen 1-5 Glock 26/27: Manufacturer: Centennial Defense Systems Fabric/Material: Stainless Steel Gun Make: Glock Gun Model: Glock 27 Glock 26 Package Contents: Centennial Defense Systems Stainless Steel Guide Rod Assembly for Gen 1-5 Glock 26/27 What firearm models does the manufacturer say Centennial Defense Systems Stainless Steel Guide Rod Assembly for Gen 1-5 Glock 26/27 is compatible with? The manufacturer suggests that Centennial Defense Systems Stainless Steel Guide Rod Assembly for Gen 1-5 Glock 26/27 is compatible with Glock 26 Glock 27Centennial Defense Systems 14332: Stainless Steel Guide Rod Assembly for Gen 1-5 Glock 2627 No Coating 20lb Spring