Centennial Defense Systems MOD5 Upper Parts Kit for Gen 1-3 Glock 19 OD Green Flat Face Button Head Screw 18lb Spring. Specifications for Centennial Defense Systems MOD5 Upper Parts Kit for Gen 1-3 Glock 19 w/Flat Face Button Head Screw: Manufacturer: Centennial Defense Systems Fabric/Material: Stainless Steel Gun Make: Glock Gun Model: Glock 19 Model Generation: 3 2 1 Package Contents: Centennial Defense Systems MOD5 Upper Parts Kit for Gen 1-3 Glock 19 w/Flat Face Button Head Screw Stainless Steel Guide Rod Assembly (Allen Screw) Stainless Steel Channel Liner Stainless Steel Firing Pin Firing Pin Spring Firing Pin Spacer Sleeve Spring Cups (2) Stainless Steel Firing Pin Safety Firing Pin Safety Spring Stainless Steel Extractor Stainless Steel Extractor Depressor Plunger Extractor Depressor Plunger Spring Spring-Loaded Bearing Aluminum Slide Cover Plate What firearm models does the manufacturer say Centennial Defense Systems MOD5 Upper Parts Kit for Gen 1-3 Glock 19 w/Flat Face Button Head Screw is compatible with? The manufacturer says that Centennial Defense Systems MOD5 Upper Parts Kit for Gen 1-3 Glock 19 w/Flat Face Button Head Screw is compatible with Glock 19Centennial Defense Systems 51415: MOD5 Upper Parts Kit for Gen 1-3 Glock 19 OD Green Flat Face Button Head Screw 18lb Spring