Rival Arms Precision Firing Pin For Gen 3/4 Glock 9MM/40S&W, Excluding Glock 43, Black Physical Vapor Deposition (PVD) Finish RA-RA40G001A

If you shoot a lot” sooner or later you will have a problem with a stock firing pin. Precision strikers improve performance and a self-lubricating coating resists wear and corrosion” hit after hit.