Centennial Defense Systems Stainless Steel Pin Kit for Gen 1-5 Glock TiN Gold 3 Pin Kit for Gen 4 Glock. Each pin is precision ground from high quality stainless steel to be direct replacements for most Gen 1-5 Glock models with no extra fitting required. Specifications for Centennial Defense Systems Stainless Steel Pin Kit for Gen 1-5 Glock: Manufacturer: Centennial Defense Systems Fabric/Material: Stainless Steel Gun Make: Glock Gun Model: Universal Package Contents: Centennial Defense Systems Stainless Steel Pin Kit for Gen 1-5 Glock What firearm models does the manufacturer say Centennial Defense Systems Stainless Steel Pin Kit for Gen 1-5 Glock is compatible with? The manufacturer says that Centennial Defense Systems Stainless Steel Pin Kit for Gen 1-5 Glock is compatible with UniversalCentennial Defense Systems 20223: Stainless Steel Pin Kit for Gen 1-5 Glock TiN Gold 3 Pin Kit for Gen 4 Glock