Faxon Firearms AR-15 5.56 NATO 9310 Steel Bolt, Salt Bath Nitride, MPI Tested FF556BCNITRIDE
Product Description
The Faxon Firearms 5.56 bolt is built for AR-15 platforms where reliability and long service life matter. Manufactured from 9310 tool steel and finished with a salt bath nitride treatment, this bolt is designed to increase surface hardness, reduce friction, and improve corrosion resistance compared to traditional phosphate finishes. Each bolt is Magnetic Particle Inspected (MPI) to help verify material integrity, and the lugs are chamfered for smoother, more reliable cycling. The extractor is made from S7 tool steel and comes assembled with a spring, silicone insert, and Crane O-ring to support consistent extraction.
Product Highlights
- 9310 tool steel bolt construction for durability in 5.56 NATO / .223 AR-15 applications
- Salt bath nitride finish helps reduce friction and improve corrosion resistance
- Magnetic Particle Inspected (MPI) for added confidence in material integrity
- Chamfered bolt lugs promote reliable cycling, including with higher-pressure loads
- S7 tool steel extractor with spring, silicone insert, and Crane O-ring installed
Specs
- Brand: Faxon Firearms
- Product Type: AR-15 bolt
- Caliber/Cartridge: 5.56 NATO
- Bolt Material: 9310 tool steel
- Extractor Material: S7 tool steel
- Finish: Salt bath nitride (black)
- Inspection/Testing: Magnetic Particle Inspected (MPI)
- Bolt Lug Detail: Back of lugs chamfered for reliability
- Extractor Components: Spring, silicone insert, and Crane O-ring installed
- Bolt Face Depth: .125
- UPC: 816341020863
- Manufacturer Part Number: FF556BCNITRIDE
Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Product Description
The Faxon Firearms 5.56 bolt is built for AR-15 platforms where reliability and long service life matter. Manufactured from 9310 tool steel and finished with a salt bath nitride treatment, this bolt is designed to increase surface hardness, reduce friction, and improve corrosion resistance compared to traditional phosphate finishes. Each bolt is Magnetic Particle Inspected (MPI) to help verify material integrity, and the lugs are chamfered for smoother, more reliable cycling. The extractor is made from S7 tool steel and comes assembled with a spring, silicone insert, and Crane O-ring to support consistent extraction.
Product Highlights
- 9310 tool steel bolt construction for durability in 5.56 NATO / .223 AR-15 applications
- Salt bath nitride finish helps reduce friction and improve corrosion resistance
- Magnetic Particle Inspected (MPI) for added confidence in material integrity
- Chamfered bolt lugs promote reliable cycling, including with higher-pressure loads
- S7 tool steel extractor with spring, silicone insert, and Crane O-ring installed
Specs
- Brand: Faxon Firearms
- Product Type: AR-15 bolt
- Caliber/Cartridge: 5.56 NATO
- Bolt Material: 9310 tool steel
- Extractor Material: S7 tool steel
- Finish: Salt bath nitride (black)
- Inspection/Testing: Magnetic Particle Inspected (MPI)
- Bolt Lug Detail: Back of lugs chamfered for reliability
- Extractor Components: Spring, silicone insert, and Crane O-ring installed
- Bolt Face Depth: .125
- UPC: 816341020863
- Manufacturer Part Number: FF556BCNITRIDE
Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.
