These fit Glock 19 / 17 / 17L / 26 and 34 - Gen 1-4. VERY IMPORTANT - GUIDE ROD (Recoil Spring Assembly) IS NOT INCLUDED! These are great for completing your custom slide. All parts are from US manufacturers. All Parts are made to the highest tolerance to the original specification. PARTS INCLUDED: Firing Pin Spring Firing Pin Spacer Sleeve Spring Cups (2-Pack) Firing Pin Safety Nitride Firing Pin Safety Spring Extractor Depressor Plunger Nitride Extractor Depressor Plunger Spring Spring Loaded Bearing Firing Pin Channel Liner Extractor Slide Cover Plate - Aluminum Thi Mfg: Zaffiri