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- Finish:
- Polished Satin
- Caliber:
- .223 Remington, .300 AAC Blackout, 5.56x45mm NATO
- Gun Make:
- AR Platform
- Gun Model:
- AR-15, M4, M16
- Hand:
- Right
- Condition:
- New
Code: 3TI-BCG-RFG58MN45-NI-B-556
MPN: NI-B-556
Made in USA
Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.
Product Info for Walker Defense Research Nickel Boron Bolt Carrier Group
The Walker Defense Research Nickel Boron BCG delivers enhanced lubricity and cleaning characteristics through its polished nickel boron coating. The bright, satin finish serves as a functional surface that provides smooth, reliable operation while offering excellent wear resistance and notably easier cleaning.![]()
Each BCG undergoes rigorous small-batch quality control throughout production. Walker Defense Research hand-matches components, conducts High Pressure Testing (HPT), and performs Magnetic Particle Inspection (MPI) of each bolt. The gas key features enhanced staking using premium OCKS screws from Michiguns, ensuring reliable operation under sustained use.
The Nickel Boron BCG is compatible with direct impingement 5.56mm, .223 Rem, and 300 BLK AR-15 platforms. The polished nickel boron surface provides excellent wear resistance and smooth operation, making this BCG particularly suitable for users seeking enhanced reliability in demanding conditions.
Specifications for Walker Defense Research Nickel Boron Bolt Carrier Group:
| Manufacturer: | Walker Defense Research |
| Finish: | Polished Satin |
| Fabric/Material: | 9310 Steel |
| Carrier Material: | 8620 Steel |
| Bolt Material: | 9310 Steel |
| Caliber: | 5.56x45mm NATO, .300 AAC Blackout, .223 Remington |
| Gun Make: | AR Platform |
| Gun Model: | M16, M4, AR-15 |
| Hand: | Right |
| Condition: | New |
| Coating: | Nickel Boron |
| Country of Origin: | USA |
| Gun Type: | Rifle |
Features of Walker Defense Research Nickel Boron Bolt Carrier Group
- Hand-Matched Component Fitment
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI) Bolt
- Enhanced Gas Key Staking with OCKS Screws
- Small-Batch Quality Control
- Smooth, Low-Friction Surface
- Superior Wear Resistance
- Enhanced Cleaning Properties
Package Contents:
- Walker Defense Research Nickel Boron Bolt Carrier Group
Walker Defense Research Nickel Boron Bolt Carrier Group Orderable Models
List of Orderable Models
- Walker Defense Research Nickel Boron Bolt Carrier Group, 5.56x45mm NATO/.300 AAC Blackout, NI-B-556 , MPN: NI-B-556 , Code: 3TI-BCG-RFG58MN45-NI-B-556
Walker Defense Research Nickel Boron Bolt Carrier Group Unavailable & Discontinued Models
List of Unorderable Models
- DEMO, Walker Defense Research Nickel Boron Bolt Carrier Group, 5.56x45mm NATO/.300 AAC Blackout, NI-B-556 , MPN: NI-B-556-DEMO , Code: 3TI-BCG-RFG58MN45-NI-B-556-DEMO
- USED, Walker Defense Research Nickel Boron Bolt Carrier Group, 5.56x45mm NATO/.300 AAC Blackout, NI-B-556 , MPN: NI-B-556-EDEMO , Code: 3TI-BCG-RFG58MN45-NI-B-556-EDEMO-RE-B
- USED, Walker Defense Research Nickel Boron Bolt Carrier Group, 5.56x45mm NATO/.300 AAC Blackout, NI-B-556 , MPN: NI-B-556-EDEMO , Code: 3TI-BCG-RFG58MN45-NI-B-556-EDEMO-RE-A