CMMG Mk4 AR-15 Firing Pin Retaining Pin

Ensure the reliability and longevity of your M16 with the CMMG Firing Pin Retainer. This high-quality part, with the MPN 55BA4C5 and UPC 815835017341, is designed to exact specifications to keep your firearm in optimal working condition.

- Keep your M16 firing smoothly and consistently
- Manufactured by trusted brand CMMG
- Part number: 55BA4C5
- UPC: 815835017341
Upgrade your M16 with the CMMG Firing Pin Retainer for unmatched performance and peace of mind on the field.