ZEV PK-UPPER-9-PRO Upper Parts Kit 9mm STS
ZEV Technologies Zev Upper Parts Kit, 9MM, ZEV Skelotonized Firing Pin, ZEV PRO Firing Pin Spring, ZEV Polished FPS, ZEV FPS Lightened Spring, ZEV Aluminum Backplate, Extractor, Extractor Spring and Plunger PK-UPPER-9-PRO
