The ODIN Works AR-15 Black Nitride Bolt Carrier Group is a premium, Mil-Spec component engineered for reliable performance in AR-15 and M4 platform rifles chambered in .223/5.56mm and .300 Blackout. Built with a Type 2 bolt face and machined to precise Mil-Spec dimensions, this bolt carrier group features a case-hardened 9310 steel bolt and a case-hardened 8620 steel carrier, both treated with a Black Nitride finish across all metal surfaces. This advanced low-friction coating dramatically reduces the need for lubricants, helping keep your rifle running cleaner and more reliably in demanding conditions. The gas key is machined from 4130 steel, attached with Grade 8 hardware, and properly staked into a milled valley to guarantee precise positioning and long-term retention. Every bolt has been Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT) to ensure quality and safety before it leaves the factory.
Product Highlights
- Black Nitride Finish on All Components: Advanced low-friction coating minimizes lubrication requirements and resists fouling for sustained reliability.
- Mil-Spec Dimensions Throughout: Type 2 bolt face with CNC-ground external surfaces after heat treat for a precision fit in AR-15 and M4 compatible rifles.
- Premium Steel Construction: Carrier machined from case-hardened 8620 steel; bolt machined from case-hardened 9310 steel for superior strength and durability.
- MPI and HPT Certified: Each bolt is Magnetic Particle Inspected and High Pressure Tested for verified quality and reliable function.
- High-Quality Sub-Components: Includes a hardened 4340 steel cam pin, Mil-Spec 8740 steel firing pin (centerless ground and Hard Chrome coated), and a 4340 steel Mil-Spec extractor with O-ring combination.
Specs
- Brand: ODIN Works
- MPN: ACC-223-BCG
- UPC: 856205005827
- Compatible Platforms: AR-15, M4
- Compatible Calibers: .223 Remington / 5.56 NATO, .300 Blackout
- Carrier Material: Case Hardened 8620 Steel
- Bolt Material: Case Hardened 9310 Steel
- Gas Key Material: 4130 Steel
- Gas Key Hardware: Grade 8, properly staked into milled valley
- Cam Pin: Hardened 4340 Steel
- Firing Pin: Mil-Spec 8740 Steel, centerless ground, Hard Chrome coated
- Extractor: 4340 Steel Mil-Spec with O-Ring combination
- Finish: Black Nitride (all components)
- Bolt Face Type: Type 2
- Carrier Type: M16
- Inspection: Magnetic Particle Inspected (MPI), High Pressure Tested (HPT)
- Condition: New
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