The Faxon FF556BCNITRIDE bolt carrier group delivers enhanced durability and reliability for AR-15 platforms through precision manufacturing and advanced surface treatments. This 5.56 NATO/.223 Remington compatible BCG features 9310 steel construction with nitride coating for extended service life and consistent cycling performance.
What Makes This Different
The 9310 steel bolt construction provides superior strength compared to standard Carpenter 158 steel bolts, offering approximately 20% greater tensile strength and improved fatigue resistance. The nitride surface treatment penetrates the steel substrate rather than simply coating the surface, creating a hardened layer that resists wear, corrosion, and fouling buildup. This combination results in extended maintenance intervals and consistent performance across thousands of rounds.Key Features
- 9310 steel bolt construction for enhanced strength and durability
- Nitride coating provides superior corrosion resistance and reduced friction
- Shot-peened bolt for improved fatigue life and stress resistance
- Properly staked gas key with Grade 8 fasteners
- Chrome-lined gas key interior prevents corrosion and gas cutting
- Compatible with 5.56 NATO and .223 Remington chambered barrels
- Mil-spec dimensions ensure reliable function in standard AR-15 receivers
Technical Specs
- Material: 9310 steel bolt, 8620 steel carrier
- Coating: Nitride treatment on all surfaces
- Caliber compatibility: 5.56 NATO/.223 Remington
- Gas key: Properly staked with Grade 8 screws
- Bolt lugs: 8 locking lugs, shot-peened finish
- Extractor: MPC (Magnetic Particle Crack) tested
- Manufacturing: CNC machined to mil-spec tolerances
- Country of origin: United States
