Rival Arms Glock Slide Completion Kit, For Glock 9MM Gen3/Gen4, Black Finish, Kit Includes Striker (Firing Pin) Spring, Extractor, Striker (Firing Pin) Safety Spring, Back Cover Plate, Extractor Depressor Plunger, RA Precision Striker (Firing Pin), Striker (Firing Pin) Spacer Sleeve, Depressor Plunger Spring, Striker (Firing Pin) Safety, Spring Loaded Bearing, Striker (Firing Pin) Spring Cups and Slide Channel Liner RA42G001A