The Grey Ghost Precision Slide Completion Kit includes all of the internal small parts needed to complete your slide assembly. This kit is compatible with 9mm GGP-17/19 slides as well as Glock OEM 17/19/26/34 Gen 1-4 slides. The upgraded 17-4 PH stainless steel striker, extractor depressor plunger, striker safety and 9mm extractor are all machined from bar stock to provide unmatched reliability. Kit Includes:17-4 PH Stainless Steel Striker17-4 PH Stainless Steel 9mm Extractor17-4 PH Stainless Steel Extractor Depressor Plunger17-4 PH Stainless Steel Striker SafetyGGP 6061-T6 Aluminum Back Plate5.5lb Striker Safety SpringExtractor Depressor Plunger SpringStriker Safety SpringGGP Striker Channel LinerStriker Spacer SleeveStriker Spring Cups (2)Extractor Depressor Plunger Bearing DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.