ZEV Technologies Essential Parts for O.Z-9 Modular Build Kit, Striker Sleeve, Spring Cups, Extractor Bearing for LCI 9MM, Extractor Depressor Plunger Rod (Small), Extractor Spring, Ejector Housing, Backplate, V2 Striker (Small), Pro Striker Striker Spring, FPS Spring, Trigger Spring, OZ9 Sight Tool and Punch PK-OZ9-MBK