The FailZero EXO Bolt Assembly is a direct replacement for AR-15 and M16 rifle platforms, engineered to reduce friction and improve reliability under adverse conditions.
- Part Type: Complete bolt assembly
- Compatible Firearms: AR-15, M16, AR-15-pattern rifles
- Material: Mil-spec steel with EXO nickel boron coating
- Finish: EXO nickel boron (silver)
- Installation: Drop-in
- Includes: Bolt body, extractor, ejector, cam pin, firing pin
