The GGP Slide Completion Kit includes all of the internal small parts needed to complete your slide assembly. Our 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. 17-4 PH Stainless Steel Striker 17-4 PH Stainless Steel 9mm Extractor 17-4 PH Stainless Steel Extractor Depressor Plunger 17-4 PH Stainless Steel Striker Safety GGP 6061-T6 Aluminum Back Plate 5.5lb Striker Safety Spring Extractor Depressor Plunger Sp Mfg: Grey Ghost Precision