The CMMG firing pin is a steel replacement for AR-15 bolts in .223 Rem, 5.56mm and 300 Blackout. A worn, chipped or broken firing pin can cause light strikes, and replacing it is a simple fix during routine maintenance. CMMG has built AR-15 and AR-10 rifles and parts since 2002.
- Part: Firing pin
- Fits: AR-15 / M16 bolts
- Calibers: .223 Rem, 5.56mm, 300 Blackout
- Material: Steel
- Color: Silver
- Manufacturer part #: 55BA41C
